Final Period Online Quiz
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It is the 3rd planet from the sun and the 5th largest in the Solar System.
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Earth
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Venus
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Mars
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Mercury
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About This Quiz
The 'Final Period Online Quiz' assesses knowledge on Earth's structure and processes. Topics include planetary position, geological layers, weathering, rock formation, and the hydrological cycle. This quiz is ideal for learners interested in Earth sciences.
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- 2.
The outermost layer of Earth between 5 to 75 km deep and divided into huge plates.
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Mantle
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Crust
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Inner Core
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Outer Core
Correct Answer
A. CrustExplanation
The outermost layer of the Earth, known as the crust, is between 5 to 75 km deep and is divided into huge plates. This layer is composed of solid rock and is the thinnest layer of the Earth. The crust is divided into two types: continental crust, which is thicker and less dense, and oceanic crust, which is thinner and more dense. The movement of these plates on the crust is responsible for various geological activities such as earthquakes and volcanic eruptions.Rate this question:
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- 3.
The breakdown of rocks and minerals into smaller pieces.
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Weathering
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Erosion
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Decomposition
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Humification
Correct Answer
A. WeatheringExplanation
Weathering refers to the process of breaking down rocks and minerals into smaller pieces. It is a natural process that occurs due to various factors such as temperature changes, wind, water, and chemical reactions. Weathering can occur through physical processes like freezing and thawing, as well as through chemical processes like oxidation and hydrolysis. This process is an essential part of the Earth's geological cycle and plays a crucial role in shaping the Earth's surface over time.Rate this question:
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- 4.
Rocks that are formed from magma.
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Sedimentary
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Metamorphic
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Igneous
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Minerals
Correct Answer
A. IgneousExplanation
Igneous rocks are formed from magma, which is molten rock that has cooled and solidified. This process typically occurs deep within the Earth's crust or in volcanic eruptions. As the magma cools, it solidifies and forms igneous rocks. These rocks can have a variety of textures and compositions depending on the cooling rate and the mineral content of the magma. Examples of igneous rocks include granite, basalt, and obsidian.Rate this question:
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- 5.
Solid material on the Earth’s surface that results from the interaction of weathering and biological activity on the parent material or underlying hard rock.
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Soil
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Wood
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Metal
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Minerals
Correct Answer
A. SoilExplanation
Soil is the correct answer because it is a solid material that is formed through the interaction of weathering and biological activity on the parent material or underlying hard rock. Weathering breaks down rocks into smaller particles, and biological activity such as the decomposition of organic matter contributes to the formation of soil. Soil is essential for plant growth and provides nutrients and support for roots.Rate this question:
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- 6.
Part of precipitation that infiltrates through the soil to the water table.
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Groundwater
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Tap water
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Stream
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Pond
Correct Answer
A. GroundwaterExplanation
Groundwater refers to the part of precipitation that seeps through the soil and reaches the water table. It is the underground water that fills the spaces between soil particles and rocks. This water is stored in aquifers and can be accessed through wells or springs. Groundwater is an important source of drinking water and irrigation for many communities. It plays a crucial role in maintaining the water balance of ecosystems and supporting plant and animal life. Therefore, the correct answer is groundwater.Rate this question:
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- 7.
Largest ocean in the world with an average depth of 3,940 meters.
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Indian
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Pacific
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Atlantic
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Artic
Correct Answer
A. PacificExplanation
The Pacific Ocean is the correct answer because it is the largest ocean in the world in terms of both surface area and volume. It covers approximately one-third of the Earth's surface and has an average depth of 3,940 meters, making it the deepest ocean as well. The Indian Ocean, Atlantic Ocean, and Arctic Ocean are also significant bodies of water, but they are smaller in size compared to the Pacific Ocean.Rate this question:
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- 8.
The condition of the atmosphere at a particular time.
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Weather
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Climate
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Humidity
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Temperature
Correct Answer
A. WeatherExplanation
The term "weather" refers to the condition of the atmosphere at a specific time. It includes factors such as temperature, humidity, and precipitation. This answer is correct because weather is the most appropriate term to describe the condition of the atmosphere at a particular time, while climate refers to long-term patterns of weather in a specific region. Humidity and temperature are specific factors that contribute to the overall weather conditions.Rate this question:
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- 9.
Prevailing wind system over the Philippines that prevails from November to February.
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Southwest Monsoon
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Southeast Monsoon
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Northeast Monsoon
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Northwest Monsoon
Correct Answer
A. Northeast MonsoonExplanation
The correct answer is Northeast Monsoon. The prevailing wind system over the Philippines from November to February is known as the Northeast Monsoon. During this period, winds blow from the northeast, bringing cool and dry air to the region. This monsoon is also known as the Amihan and is characterized by clear skies and cooler temperatures. It is an important weather phenomenon in the Philippines, influencing the country's climate and agriculture.Rate this question:
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- 10.
It describes the continuous movement of water on, above and below the surface of the Earth.
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Hydrologic cycle
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Carbon cycle
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Oxygen cycle
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Nitrogen cycle
Correct Answer
A. Hydrologic cycleExplanation
The hydrologic cycle refers to the continuous movement of water on, above, and below the surface of the Earth. This cycle involves processes such as evaporation, condensation, precipitation, and runoff, which collectively ensure the circulation and distribution of water throughout the planet. The hydrologic cycle is vital for maintaining the Earth's water balance, regulating climate patterns, and supporting various ecosystems and human activities that rely on water resources.Rate this question:
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- 11.
Occurs when plates in the Earth’s crust grind against each other:
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A. Earthquake
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Mountain formation
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Trench formation
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Volcanic eruption
Correct Answer
A. A. EarthquakeExplanation
When plates in the Earth's crust grind against each other, it causes a release of energy that results in vibrations or shaking of the Earth's surface. This phenomenon is known as an earthquake. Earthquakes can occur along faults, which are fractures in the Earth's crust where the plates are in contact. The movement of the plates, either sliding past each other, colliding, or moving apart, causes stress to build up along the fault line. Once the stress exceeds the strength of the rocks, it is released as seismic waves, causing an earthquake.Rate this question:
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- 12.
Occurs when plates in the Earth’s crust collide:
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Volcanic eruption
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Mountain formation
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Trench formation
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Earthquake
Correct Answer
A. Mountain formationExplanation
When plates in the Earth's crust collide, it leads to intense pressure and compression. This causes the crust to buckle and fold, resulting in the formation of mountains. The collision of plates forces the rocks to uplift and create large mountain ranges such as the Himalayas or the Andes. These mountains are formed over millions of years as the plates continue to collide and push against each other.Rate this question:
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- 13.
Occurs when one plate in the Earth’s crust slides under another plate:
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Trench formation
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Volcanic eruption
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Earthquake
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Mountain formation
Correct Answer
A. Trench formationExplanation
Trench formation occurs when one plate in the Earth's crust slides under another plate. This process is known as subduction, where the denser oceanic plate sinks beneath the less dense continental plate. As the oceanic plate descends into the mantle, it creates a deep trench on the ocean floor. This process is associated with the formation of volcanic arcs and can lead to the occurrence of earthquakes as the plates interact and release built-up stress. Mountain formation, on the other hand, is typically caused by the collision of two continental plates, while volcanic eruptions are caused by the release of magma from the Earth's mantle.Rate this question:
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- 14.
Occurs when the Earth’s mantle pushes through the crust:
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Earthquake
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Mountain formation
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Trench formation
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Volcanic eruption
Correct Answer
A. Volcanic eruptionExplanation
Volcanic eruption is the correct answer because it occurs when the Earth's mantle, which is located beneath the Earth's crust, pushes through the crust and releases magma, gases, and other materials onto the surface. This process creates volcanic activity, such as the eruption of lava, ash, and gases from a volcano. Unlike earthquakes, mountain formation, and trench formation, which are caused by tectonic plate movements, volcanic eruptions specifically involve the release of molten rock and other materials from beneath the Earth's surface.Rate this question:
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- 15.
The layer located at the center of the Earth:
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Core
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Mantle
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Crus
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Equator
Correct Answer
A. CoreExplanation
The correct answer is "Core". The core is the layer located at the center of the Earth. It is divided into two parts: the inner core and the outer core. The inner core is solid and made up of iron and nickel, while the outer core is liquid. The core plays a crucial role in generating Earth's magnetic field and is responsible for the movement of tectonic plates.Rate this question:
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- 16.
Species such as anemone, insects, lizards, and mammals belong to Kingdom:
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Animalia
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Plantae
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Monera
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Protista
Correct Answer
A. AnimaliaExplanation
The correct answer is Animalia because the species mentioned in the question, such as anemone, insects, lizards, and mammals, are all classified as animals. Animalia is the kingdom that includes multicellular organisms that are heterotrophic and have the ability to move.Rate this question:
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- 17.
Red, brown, and green algae belong to Kingdom:
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Animalia
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Plantae
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Monera
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Protista
Correct Answer
A. PlantaeExplanation
Red, brown, and green algae belong to the Kingdom Plantae because they are photosynthetic organisms that contain chlorophyll and other pigments. They are capable of producing their own food through photosynthesis, similar to plants. Algae are considered plant-like organisms and are classified in the Kingdom Plantae along with other plants.Rate this question:
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- 18.
Mushrooms belong to Kingdom:
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Fungi
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Plantae
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Monera
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Protista
Correct Answer
A. FungiExplanation
Mushrooms belong to the Kingdom Fungi. Fungi is a separate kingdom in the classification system, distinct from plants, monera, and protista. Fungi are eukaryotic organisms that obtain nutrients by decomposing organic matter or by forming symbiotic relationships with other organisms. Mushrooms are a type of fungi that typically have a stem, cap, and gills, and they play important roles in ecosystems as decomposers and in human culture as food or medicinal sources.Rate this question:
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- 19.
pH is a measure of the concentration of:.
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Proton-hydrogen
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Hydroxide ion
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Number of electrons
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Hydrogen ion
Correct Answer
A. Hydrogen ionExplanation
pH is a measure of the concentration of hydrogen ions in a solution. It indicates the acidity or alkalinity of a substance. The lower the pH value, the higher the concentration of hydrogen ions and the more acidic the solution is. The higher the pH value, the lower the concentration of hydrogen ions and the more alkaline the solution is. Therefore, the correct answer is "Hydrogen ion" because pH is directly related to the concentration of hydrogen ions in a solution.Rate this question:
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- 20.
Sea water just like the baking soda has a pH value between 8-9 that is:
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Basic
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Acidic
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Neutral
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None of the above
Correct Answer
A. BasicExplanation
Sea water has a pH value between 8-9, which indicates that it is basic. Basic substances have a pH value greater than 7, indicating that they are alkaline. Therefore, sea water falls into the category of basic substances due to its pH level.Rate this question:
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- 21.
It is a complex set of relationship among living resources, environment, and organism of a community.
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Interaction
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Population
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Ecosystem
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Biodiversity
Correct Answer
A. EcosystemExplanation
An ecosystem refers to a complex set of relationships among living resources, the environment, and organisms within a community. It encompasses the interactions and interdependencies between different species and their physical surroundings. This includes the flow of energy and nutrients, as well as the cycling of matter within the ecosystem. Ecosystems can vary in size and can be found in various habitats, such as forests, oceans, and grasslands. They play a crucial role in maintaining the balance of nature and supporting the survival of different organisms within the community.Rate this question:
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- 22.
Variety of organisms and species in the environment.
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Population
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Ecosystem
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Biodiversity
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Interaction
Correct Answer
A. BiodiversityExplanation
Biodiversity refers to the variety of organisms and species in a given environment. It encompasses the different forms of life, including plants, animals, and microorganisms, as well as the genetic diversity within each species. Biodiversity is important for maintaining the balance and functioning of ecosystems, as each organism plays a unique role in the overall ecosystem. It also provides various benefits to humans, such as food, medicine, and ecosystem services. Therefore, the given answer, biodiversity, accurately represents the concept of the variety of organisms and species in the environment.Rate this question:
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- 23.
It is the living component of an ecosystem.
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Edaphic
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Climatic
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Biotic
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Abiotic
Correct Answer
A. BioticExplanation
The correct answer is "Biotic." Biotic refers to the living components of an ecosystem, such as plants, animals, and microorganisms. These organisms interact with each other and with the non-living components of the ecosystem, such as soil and climate, to maintain a balanced and functioning ecosystem. Biotic factors play a crucial role in shaping the structure and dynamics of an ecosystem.Rate this question:
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- 24.
Organisms that use nonliving organic matter as a source of energy and raw materials to build their bodies.
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Producers
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Primary Consumers
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Decomposers
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Secondary Consumers
Correct Answer
A. DecomposersExplanation
Decomposers are organisms that break down nonliving organic matter, such as dead plants and animals, into simpler substances. They play a crucial role in recycling nutrients back into the ecosystem by decomposing dead organisms and releasing nutrients that can be used by other organisms. Decomposers obtain energy by breaking down these organic materials and use them as a source of energy and raw materials to build their own bodies. This process helps to maintain the balance of nutrients in the ecosystem and is essential for the overall functioning of the food chain.Rate this question:
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- 25.
One that has a critical role to play in the maintenance of specific ecosystems.
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Endemic Species
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Endagered Species
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Keystone Species
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Predator
Correct Answer
A. Keystone SpeciesExplanation
A keystone species is a species that has a critical role in maintaining the balance and stability of a specific ecosystem. They have a disproportionate impact on the ecosystem compared to their abundance. If a keystone species is removed from the ecosystem, it can cause a cascading effect, leading to the collapse of the entire ecosystem. They often have a significant influence on the structure and function of the ecosystem by regulating the population of other species or by providing essential services such as pollination or habitat creation.Rate this question:
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- 26.
A biological interaction where one kills and eats other organism.
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Competition
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Parasitism
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Predation
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Commensalism
Correct Answer
A. PredationExplanation
Predation is the correct answer because it refers to a biological interaction where one organism kills and eats another organism. In predation, there is a predator that hunts and consumes its prey for survival. This interaction is essential for maintaining the balance of ecosystems and the regulation of populations. Competition refers to the struggle between organisms for limited resources, parasitism is a relationship where one organism benefits at the expense of another, and commensalism is a relationship where one organism benefits without affecting the other.Rate this question:
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- 27.
A relationship where two species are usually in physical contact and at least one of them derives some sort of benefit from this contact.
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Inter Competition
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Intra Competition
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Symbiosis
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Predation
Correct Answer
A. SymbiosisExplanation
Symbiosis refers to a relationship between two species where they are usually in physical contact and at least one of them derives some sort of benefit from this contact. This can include mutualistic relationships where both species benefit, commensal relationships where one species benefits while the other is unaffected, or parasitic relationships where one species benefits at the expense of the other. Symbiosis is a common phenomenon in nature and plays a crucial role in shaping ecosystems and promoting coexistence between different species.Rate this question:
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- 28.
Relationship between organisms in which one organism benefits while the other is not affected.
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Competition
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Parasitism
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Commensalism
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Mutualism
Correct Answer
A. CommensalismExplanation
Commensalism is the correct answer because it describes a relationship between organisms in which one organism benefits while the other is not affected. In commensalism, one organism benefits from the relationship without causing any harm or benefit to the other organism. This type of relationship is often seen in nature where one organism may use another organism for transportation or shelter without causing any harm to the host organism.Rate this question:
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- 29.
Examples of this kind of interaction are ants on acacia tree or bacteria on the roots of legumes.
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Parasitism
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Commensalism
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Mutualism
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Competition
Correct Answer
A. MutualismExplanation
This answer is correct because mutualism refers to a type of interaction between two species in which both species benefit. In the examples given, ants on acacia trees and bacteria on legume roots, both species involved have a mutually beneficial relationship. The ants protect the tree from herbivores and in return, they receive food and shelter. Similarly, the bacteria on legume roots fix nitrogen from the atmosphere, providing essential nutrients to the legume plants, while the bacteria receive nutrients from the plants.Rate this question:
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- 30.
An example of parasitism except:
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Lice on human head
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Mistletoe on a tree
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Remoras on sharks
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Worms inside the body
Correct Answer
A. Remoras on sharksExplanation
Remoras on sharks is not an example of parasitism because remoras and sharks have a mutualistic relationship. Remoras attach themselves to the shark's body and feed off the scraps of food left behind by the shark. In return, they provide the shark with a cleaning service by removing parasites and dead skin. This relationship benefits both species involved, unlike parasitism where one species benefits at the expense of the other.Rate this question:
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- 31.
An example of interspecific competition between species preying for food except:
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Hawks and Owl
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Foxes and coyotes
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Two robins
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Lions and tigers
Correct Answer
A. Two robinsExplanation
Interspecific competition refers to the competition for resources between different species. In the given options, hawks and owls, foxes and coyotes, and lions and tigers are all examples of interspecific competition as they are different species preying for the same food resources. However, two robins do not represent interspecific competition as they belong to the same species and would typically share similar ecological niches and food preferences. Therefore, two robins do not engage in interspecific competition for food.Rate this question:
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- 32.
Primary consumers or animals that eat producers (plants or phytoplankton) as a source of food are called:
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Carnivores
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Omnivores
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Herbivores
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Decomposers
Correct Answer
A. HerbivoresExplanation
Herbivores are animals that primarily consume plants or phytoplankton as their source of food. They do not consume other animals, distinguishing them from carnivores. Omnivores, on the other hand, consume both plants and animals. Decomposers, such as bacteria and fungi, break down dead organic matter. Therefore, the correct answer for animals that eat producers as a source of food is herbivores.Rate this question:
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- 33.
Concept that communities proceed through a series of recognizable, predictable changes in structure over time.
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Weathering
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Metamorphosis
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Succession
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Degeneration
Correct Answer
A. SuccessionExplanation
Succession refers to the concept that communities undergo a series of predictable changes in their structure over time. This process occurs as one community gradually replaces another in a given area. It involves the colonization of new species and the gradual development of a more complex and stable ecosystem. Succession can be primary, starting from bare rock or soil, or secondary, starting from disturbed or previously inhabited areas. It is an important ecological process that allows for the renewal and regeneration of ecosystems.Rate this question:
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- 34.
Terrestrial climax communities with wide geographic distribution are called:
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Apiary
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Terrarium
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Biomes
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Aviary
Correct Answer
A. BiomesExplanation
Biomes are terrestrial climax communities with wide geographic distribution. They are characterized by distinct climate, vegetation, and animal life. Biomes include major ecosystems such as deserts, forests, grasslands, and tundra. These communities are influenced by factors such as temperature, precipitation, and soil type, which determine the types of organisms that can thrive in each biome. The term "biome" is used to categorize and study these large-scale ecological units, providing a framework for understanding the distribution and interactions of different species across the planet.Rate this question:
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- 35.
Type of land ecosystem or biomes where the primary factor that determines the area is the lack of water.
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Savanna
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Taiga
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Desert
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Tundra
Correct Answer
A. DesertExplanation
Desert is the correct answer because it is a type of land ecosystem or biome where the primary factor that determines the area is the lack of water. Deserts are characterized by extremely low precipitation levels and are often hot and dry. The scarcity of water in deserts creates harsh conditions for plant and animal life, leading to a unique and specialized ecosystem that is adapted to survive in these arid environments.Rate this question:
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- 36.
Extremely cold region that lacks trees and has a permanently frozen subsurface soil.
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Taiga
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Chaparral
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Tundra
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Savanna
Correct Answer
A. TundraExplanation
The correct answer is Tundra because it is an extremely cold region that lacks trees and has a permanently frozen subsurface soil. The Tundra biome is characterized by low temperatures, short growing seasons, and little precipitation. The harsh climate and frozen soil make it difficult for trees to grow, resulting in a treeless landscape dominated by low-growing vegetation such as mosses, lichens, and shrubs.Rate this question:
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- 37.
Type of an aquatic ecosystem that have little dissolved salt.
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Pelagic
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Benthic
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Freshwater
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Estuaries
Correct Answer
A. FreshwaterExplanation
Freshwater ecosystems are characterized by low levels of dissolved salt, making them suitable habitats for many freshwater organisms. These ecosystems include lakes, ponds, rivers, and streams, where the water contains less than 0.5% salt concentration. These habitats support a variety of plants and animals that have adapted to survive in freshwater conditions.Rate this question:
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- 38.
Shallow, partially enclosed areas where freshwater enters the ocean.
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Benthic
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Abyssal
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Estuaries
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Pelagic
Correct Answer
A. EstuariesExplanation
Estuaries are shallow, partially enclosed areas where freshwater from rivers and streams mixes with saltwater from the ocean. They are characterized by fluctuating salinity levels due to the mixing of these two types of water. Estuaries are often found along coastlines and are home to a diverse range of plant and animal species. They serve as important habitats for many organisms and also provide valuable ecosystem services such as water filtration and nutrient cycling.Rate this question:
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- 39.
Measurement of the number of kinds of ecosystems present in an area.
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Genetic Diversity
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Species Diversity
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Ecosystem Diversity
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Population
Correct Answer
A. Ecosystem DiversityExplanation
Ecosystem diversity refers to the variety of ecosystems present in a given area. It encompasses the range of different habitats, communities, and ecological processes that exist within a region. This measurement takes into account the different types of ecosystems, such as forests, grasslands, wetlands, and deserts, as well as the interactions and relationships between them. By assessing ecosystem diversity, scientists can gain insight into the overall health and resilience of an area's ecological systems, as well as the potential impacts of human activities on these systems.Rate this question:
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- 40.
Organisms that are exclusively native to a place or a biota is called:
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Ecdemic
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Pandemic
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Endemic
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Endangered
Correct Answer
A. EndemicExplanation
Endemic refers to organisms that are exclusively native to a specific place or biota. This means that they are found only in that particular area and are not naturally found anywhere else. The term "endemic" is used to describe the unique species or populations that have evolved in isolation and are adapted to the specific conditions of their habitat. This term is commonly used in the field of biology and conservation to highlight the importance of preserving and protecting these unique species and their habitats.Rate this question:
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- 41.
Development that meets the needs of the present without compromising the ability of future generations to meet their own needs is called _________ development.
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Cognitive
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Interactive
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Ecosystem
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Sustainable
Correct Answer
A. SustainableExplanation
Sustainable development refers to the practice of utilizing resources in a way that satisfies the current needs of society without depleting them for future generations. It emphasizes the importance of balancing economic growth, social progress, and environmental protection. This approach ensures that the well-being and quality of life of future generations are not compromised by the actions and decisions made in the present.Rate this question:
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- 42.
Waste material or impurity that poisons the air, water, and land.
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Biofuel
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Phytoplanktons
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Pollution
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Greenhouse gases
Correct Answer
A. PollutionExplanation
Pollution refers to waste material or impurity that poisons the air, water, and land. It is the correct answer because it encompasses the concept described in the question. Pollution can occur in various forms such as air pollution, water pollution, and land pollution, and it poses a significant threat to the environment and human health.Rate this question:
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- 43.
It covers three quarters of the earth’s surface where the marine ecosystem is a major part..
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Biosphere
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Hydrosphere
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Lithosphere
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Atmosphere
Correct Answer
A. HydrosphereExplanation
The hydrosphere refers to the part of the Earth that is made up of water, including oceans, seas, lakes, rivers, and groundwater. It covers three quarters of the Earth's surface, indicating that it is a major component of the planet. The marine ecosystem, which is mentioned in the question, is a part of the hydrosphere. Therefore, the correct answer is hydrosphere.Rate this question:
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- 44.
It forms a protective shell composed of layers of gases that covers the earth.
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Atmosphere
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Lithosphere
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Hydrosphere
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Biosphere
Correct Answer
A. AtmosphereExplanation
The atmosphere is the correct answer because it is the layer of gases that surrounds the Earth. It acts as a protective shell, shielding the planet from harmful radiation and providing the necessary gases for life to thrive. The atmosphere also plays a crucial role in regulating temperature and weather patterns on Earth.Rate this question:
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- 45.
Natural resource which can replenish with the passage of time, either through biological reproduction or other naturally recurring processes are called ____________ resources.
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Renewable
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Conserved
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Non-renewable
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Common
Correct Answer
A. RenewableExplanation
Renewable resources are natural resources that can be replenished over time through biological reproduction or other naturally recurring processes. These resources are not depleted permanently and can be used sustainably without causing long-term damage to the environment. Examples of renewable resources include solar energy, wind energy, and timber from sustainably managed forests.Rate this question:
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- 46.
Minerals that have been formed in the lithosphere, remain on earth in a different form once used and become a waste material unless recycled are called __________ resources.
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Common
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Non-renewable
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Renewable
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Conserved
Correct Answer
A. Non-renewableExplanation
Minerals that have been formed in the lithosphere and are not replenished over a short period of time are called non-renewable resources. Once these minerals are extracted and used, they cannot be replaced or regenerated within a human lifespan. Instead, they become waste materials unless they are recycled. This makes them finite and valuable resources that need to be conserved and used wisely to ensure their availability for future generations.Rate this question:
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- 47.
It is produced by the continuous production of greenhouse gases by human activities making the earth warmer.
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El Niño
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Heat wave
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Global Warming
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Solar Storm
Correct Answer
A. Global WarmingExplanation
Global warming refers to the long-term increase in Earth's average surface temperature due to the continuous production of greenhouse gases by human activities. These gases, such as carbon dioxide and methane, trap heat in the atmosphere, leading to a warming effect on the planet. This phenomenon is primarily caused by the burning of fossil fuels, deforestation, and industrial processes. The increase in global temperatures has various impacts, including rising sea levels, melting ice caps, and extreme weather events. Therefore, global warming is the correct answer as it aligns with the explanation provided.Rate this question:
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- 48.
Due to elevated sea temperature, corals lose their color, turns white then dies. This is called coral ________..
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Fission
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Bailout
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Fragmentation
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Bleaching
Correct Answer
A. BleachingExplanation
When corals experience elevated sea temperatures, they undergo a process called bleaching. This occurs when the corals expel the algae living in their tissues, causing them to lose their color and turn white. Without the algae, the corals are unable to receive sufficient nutrients and energy, leading to their eventual death. Bleaching is a significant threat to coral reefs worldwide and is often caused by climate change and human activities.Rate this question:
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- 49.
It uses microorganisms, often bacteria and fungi, to dissolve pollutants in the air.
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Cooling Pond
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Oxidation Ponds
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Improve dispersion
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Biofiltration
Correct Answer
A. BiofiltrationExplanation
Biofiltration is the correct answer because it involves the use of microorganisms, such as bacteria and fungi, to break down and remove pollutants from the air. These microorganisms act as natural filters, breaking down the pollutants into harmless byproducts. This process is commonly used in wastewater treatment plants and industrial facilities to improve air quality and reduce pollution.Rate this question:
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