A) stops ultraviolet radiation
B) absorbs polluent gases
C) stops green house effect
D) stops increase in temperature of atmosphere
Correct Answer: A
Solution :
The main constituent of atmosphere called ozone lies in layer 'Ozone Sphere' extending from 30 km to nearly 50 km above the earth's surface. This layer absorbs the major part of the ultraviolet radiations and X-rays coming from the sun and does not allow them to reach the earth's surface. These radiations are harmful for men, animals and plants. It is for this reason that ozone layer is crucial for human survival.
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