Olympiad class 4 GK Environment and its Conservation
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What type of pollution is caused by excessive noise?
2 / 25
What is the main component of smog?
3 / 25
What is the term for the variety of different species in an ecosystem?
4 / 25
Which atmospheric layer contains the ozone layer that protects us from the sun's harmful rays?
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Which layer of the atmosphere protects us from harmful UV rays?
6 / 25
What is the main reason for the decline of coral reefs?
7 / 25
The diversity of plant and animal life in a particular habitat is known as what?
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What do you call the practice of growing plants without soil?
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What is the process of planting trees to restore a forest called?
10 / 25
Which of these is a renewable source of energy?
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Which of the following is a non-biodegradable material?
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Which pollutant, commonly found in oceans, is primarily harmful to marine life?
13 / 25
Which material does not break down naturally in the environment and remains for many years?
14 / 25
Which of these animals is considered a keystone species?
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What is a clean and inexhaustible energy resource derived from the sun?
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Which of these is a major threat to ocean life?
17 / 25
Which practice helps to reduce soil erosion?
18 / 25
The combination of smoke and fog, often seen in polluted urban areas, is called what?
19 / 25
Growing plants using nutrient-rich water instead of soil is called what?
20 / 25
A region that is saturated with water, either permanently or seasonally, is called a what?
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What is the main cause of global warming?
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Which gas is primarily responsible for the greenhouse effect?
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What is the primary source of energy for the Earth's climate system?
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What is the most crucial source of energy driving the Earth's climate and weather systems?
25 / 25
What are species called that are in danger of becoming extinct?
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