Answers

2015-09-28T23:32:09+05:30
Ozone layer is the layer which protects the earth from the harmful Ultra Violet(UV) rays of the Sun.
They are there to prevent these rays from entering into the earth's atmosphere.

The O₂ molecule along with, O,
gives the Ozone, O₃.

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2015-09-29T06:08:10+05:30
The layer which protects us from harmful UV rays
is called ozone layer.
ozone is a gas O3
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