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Earn 100

Why is there increase in garbage?

Important Questions on Our Environment

HARD
Which of the following is a group of only biodegradable substances?
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What are biomedical wastes? Please mention the name of two diseases caused by them. Explain the process of their disposal by incineration method.
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Write one harmful effect of ultraviolet radiation in human beings.
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Give any two ways in which non-biodegradable substances would affect the environment.
HARD
How can you help in reducing the problem of waste disposal? Give any two 
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The disposal of the waste is a serious _____ problem. (economical, social, environmental, visual)

EASY
What is waste? Explain two methods of waste management.
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We should avoid the use of disposable plastics, because _____.
EASY

An environmentalist on a visit to your school suggested various methods to save the environment.

What did the term 'Reduce' refer to?

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The industrial process designed to reduce unwanted materials to simple solid and gaseous residue is called
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Explain in brief how the ozone layer is getting depleted.
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Explain the management of hazardous wastes.
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State two problems caused by non-biodegradable wastes that we generate.
EASY
Name the solar radiation from which the surface of the earth is shielded by ozone layer.
EASY
Which of the following groups contains only biodegradable items?
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Science teacher Mamtaben gives certain statements regarding the importance of the ozone layer. Which statement is totally correct?

(i) Troposphere is not the nearest layer from the earth.

(ii) At a height of 50km in the stratosphere, the ozone layer is located.

(iii) Ozone is a mixed layer of all gases.

(iv) Ozone acts as an umbrella for humans.

(v) Ozone layer is harmful to living organisms.

EASY
Which of the following is an example of non-biodegradable waste?
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What is Agriculture waste? Explain any two methods of its disposal.
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List the advantages of ‘reduce’ and ‘reuse’ to save the environment.
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How can you help in reducing the problem of waste disposal?