Science Gr.7 Unit Test

2.

Why do biomes exist??

Climatic conditions
C02
They dont
Who cares
Biogeoghrphical

Correct Answer

A. Climatic conditions

Explanation

Biomes exist due to climatic conditions. Different regions on Earth have varying temperatures, precipitation levels, and sunlight exposure, which create distinct climates. These climatic conditions determine the types of plants, animals, and ecosystems that can thrive in a particular area, leading to the formation of different biomes. For example, tropical rainforests exist in areas with high temperatures and abundant rainfall, while deserts exist in areas with low precipitation and extreme temperatures. The combination of these climatic factors shapes the characteristics and biodiversity of each biome.

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1

3.

Who made an experiment of the carbon cycle??

John priestly
Joe jackson
Joseph Priestly
Matt
Beyonce

Correct Answer

A. Joseph Priestly

Explanation

Joseph Priestly made an experiment of the carbon cycle.

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4.

A______________ is the interaction of organisms with the enviornment.

Correct Answer
Ecosystem

Explanation
An ecosystem refers to the interaction between organisms and their environment. It encompasses the living organisms, such as plants and animals, as well as the non-living components like air, water, and soil. This interaction involves the exchange of energy and matter, where organisms depend on each other and their surroundings for survival. Ecosystems can vary in size, ranging from a small pond to a vast forest, and they play a crucial role in maintaining the balance of nature.

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5.

______________ is the pattern in nature that repeats over time.

Correct Answer
Cycle

Explanation
A cycle is a pattern that repeats over time in nature. It can refer to various phenomena, such as the water cycle, the carbon cycle, or the life cycle of organisms. These cycles involve a series of events or processes that occur in a predictable sequence and repeat themselves. They are essential for maintaining balance and stability in the natural world.

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6.

A predator is .....

An organism that eats other organisms
An abiotic element
A consumer
A cat
A parasite

Correct Answer(s)

A. An organism that eats other organisms
A. A consumer

Explanation

The correct answer is "an organism that eats other organisms". This is because a predator is a type of organism that hunts, kills, and consumes other organisms for food. Predators are an important part of the food chain as they help regulate the population of their prey and maintain the balance of ecosystems. A consumer, on the other hand, is a broader term that includes both predators and other organisms that obtain energy by consuming other organisms or organic matter.

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7.

A ________________ is a living part of the enviorment.

Correct Answer(s)
Biotic element

Explanation
A biotic element refers to a living part of the environment. This can include plants, animals, fungi, and microorganisms that interact with each other and their surroundings. Biotic elements play a crucial role in the functioning of ecosystems as they contribute to the nutrient cycle, energy flow, and overall biodiversity. These living organisms are interconnected and depend on each other for survival, making them an essential component of the environment.

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8.

What is a Decomposer??

9.

Science Gr.7 Unit Test

Sun`s energy+H20+C02=O2 and simple sugars. This is what???

Quiz Preview

Why do biomes exist??

Who made an experiment of the carbon cycle??

A______________ is the interaction of organisms with the enviornment.

______________ is the pattern in nature that repeats over time.

A predator is .....

A ________________ is a living part of the enviorment.

What is a Decomposer??

What is Ecology??