Question

what is ozone layer?

Answer 1

when O2 reaches the outer atmosphere the uv radiations break O2 in single atom . this o joins with O2 creating o3. it thus stops uv radiations

Answer 2

The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.