Question

why is ozone layer known as protective shield of the earth?

Answer 1

because it protect us from harmful uv rays of sun.

Answer 2

Hlooo..


Here is your answer. .

As the ozone layer protects the earth from

From the ultraviolet rays of the sun which is
Very harmful for all of us whether living thing or non-living thing.

So...

ozone layer known as protective shield of the earth..