Answers

2016-03-30T13:46:42+05:30
The ozone layer absorbs the harmful UV radiations of sun hence protects us from the UV rays.
Air pollutants like CFCs are responsible for its depletion
UV rays affect photosynthesis and cause skin cancer in humans
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2016-03-30T13:49:01+05:30
It protects us from UV & IR rays of the sun. it is depleting due to realizing of access CO2in our atmosphere
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