Ozone layer prevents us from harmful ultraviolet rays of sun by restricting it to enter into earth's atmosphere. Because this radiation causes skin cancer, eye blindness and cataract, the ozone layer plays an important role in protecting human health.

Without layer of ozone in the atmosphere, it would be very difficult for anything to survive on the surface. But now pollutants such as chlorofluorocarbons (CFCs) are damaging the ozone layer of atmosphere.