What is Ozone layer?mention its importance.

1.	What is Ozone layer?mention its importance.
Answer» Thx to both of you ?? The outer layer of the atmosphere , covered by a layer known as Ozone layer ???? Upper layer of our atmosphere is covered by a layer called ozone layer. Ozone protects the Earth from harmful ultraviolet (UV) rays from the Sun.plants can\'t survive in heavy ultra violet radiation.

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