Answers

2015-09-15T19:32:07+05:30
Ozone's symbol is O3
I prevents harmful U.V. rays to enter enter earth
ozone layer gets depleted due to the gases like carbon dioxide , CFC etc
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if u mark my answer as brainlyest one first
i dont hw to do that
just click it in the border
that button ( mark the brainlyest)
it is not found here