Test Your Knowledge On Environment!

Explanation
The correct answer is Biosphere. The biosphere refers to the layer on Earth where living organisms exist. It includes all ecosystems and habitats, from the depths of the oceans to the highest mountains. This layer is where life thrives and interacts with the other spheres of the Earth, such as the atmosphere, hydrosphere, and lithosphere. It is the only layer that supports and sustains life, making it the life-bearing layer on Earth.

Explanation
Carbon monoxide is not considered a greenhouse gas because it does not have the ability to trap heat in the Earth's atmosphere like other greenhouse gases do. Greenhouse gases, such as methane, carbon dioxide, and nitrous oxide, have the ability to absorb and emit infrared radiation, leading to the greenhouse effect and global warming. Carbon monoxide, on the other hand, is primarily produced by the incomplete combustion of fossil fuels and does not possess the same heat-trapping properties as the other gases listed.

Explanation
5th June is observed as World Environment Day. This day is dedicated to raising awareness and taking action on urgent environmental issues. It aims to encourage individuals, communities, and governments to come together and take proactive measures to protect and preserve the environment. World Environment Day serves as a platform to promote sustainable practices, reduce pollution, conserve biodiversity, and address climate change. It is celebrated globally with various activities such as tree planting, clean-up campaigns, educational programs, and policy discussions to promote a healthier and more sustainable planet.

Explanation
Chlorofluorocarbons (CFC's) are the main cause of ozone layer depletion. When released into the atmosphere, CFC's rise to the stratosphere where they are broken down by ultraviolet radiation, releasing chlorine atoms. These chlorine atoms then react with ozone molecules, breaking them apart and depleting the ozone layer. This process is known as ozone depletion and has significant environmental consequences, such as increased UV radiation reaching the Earth's surface, which can lead to skin cancer, damage to marine life, and disruption of ecosystems.

Explanation
Photosynthesis is the correct answer because it is a process by which green plants and some other organisms convert carbon dioxide and sunlight into glucose and oxygen. During photosynthesis, plants absorb carbon dioxide from the atmosphere and release oxygen as a byproduct. This process helps to remove carbon dioxide from the atmosphere and is essential for maintaining the balance of gases in the environment.

Explanation
News paper is biodegradable because it is made from natural materials such as wood pulp, which can be broken down by bacteria and other microorganisms over time. This process allows the paper to decompose and return to the environment without causing long-term harm. On the other hand, plastic mug, chips pockets, and aluminium foil are not biodegradable and can persist in the environment for hundreds of years, contributing to pollution and environmental damage.

Explanation
Growing population is a threat to the environment because it leads to increased demand for resources such as land, water, and energy. This can result in deforestation, habitat destruction, pollution, and depletion of natural resources. The growing population also puts pressure on infrastructure, transportation, and waste management systems, leading to further environmental degradation. Therefore, the presence of a growing population poses significant challenges in maintaining a sustainable and healthy environment.

Explanation
Nitrogen makes up 78% of air. Air is composed of various gases, and nitrogen is the most abundant gas, accounting for the majority of the air we breathe. Oxygen, carbon dioxide, and water vapor are also present in the air, but in smaller quantities compared to nitrogen.

Explanation
The Chipko Movement is a social and environmental movement that originated in India in the 1970s. It was primarily focused on the conservation of forests. The movement involved hugging or embracing trees to prevent them from being cut down, thus raising awareness about deforestation and the importance of preserving forests. The movement aimed to protect the environment, promote sustainable development, and safeguard the livelihoods of local communities dependent on the forests. Therefore, the correct answer is forest conservation.

Explanation
The correct answer is Acid Rain. Acid rain is caused by pollutants in the air, such as sulfur dioxide and nitrogen oxide, which react with water molecules to form sulfuric acid and nitric acid. These acids can corrode and discolor the surface of buildings and structures, including the Taj Mahal. Over time, the acid rain can cause the white marble of the Taj Mahal to turn yellowish.