A considerable part of the harmful ultraviolet radiation of the sun does not reach the surface of the earth. This is because high above the earth's atmosphere there is a layer of

The presence of ozone layer in the stratosphere is of great significance for all as it acts as a protective umbrella to the atmosphere.

It protects the earth from harmful ultraviolet rays coming from the sun.

It acts as a shield for life on earth by trapping the ultraviolet radiation in the stratosphere which can penetrate organism’s protective layers like skin.