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Answer the following questions : (d) T...

Answer the following questions :
(d) The small ozone layer on top of the stratosphere is crucial for human survival. Why?

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The small ozone layer on top of the stratosphere is crucial for human survival because it absorbs most of the ultraviolet rays coming from Sun. If ozone layer had not been there then ultraviolet rays will also enter the earth and cause danger to survival of human race.
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