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Question

Ultraviolet radiation is absorbed by ?

A
exosphere
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B
ionosphere
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C
ozonosphere
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D
stratosphere.
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Solution

The correct option is B stratosphere.
The stratosphere is the second layer of the earth's atmosphere and extends up-to 50 kilometres high. Most of the ultraviolet radiation, about 99% radiation reaching the earth' s surface from the sun is absorbed by the stratosphere.

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