ozone layer

It is an outer covering around our earth surface, which protect us from ultravoilet rays, which comes from the sun.

Side effects

if these rays are fallen on earth directly they can cause various diseases in humans, like skin cancer, allergies, hair fallen.

ozone layer depletion

ozone layer depletion day by day because of increases level of CFC's, Carbon mono oxide, carbon dioxide etc which are emitted from the factories, burning of fossil fuels, burning of coal , petroleum.