Depleting the ozone layer allows more ultraviolet (UV) radiation to pass through it, which reaches the Earth's surface. These UV rays cause various harmful effects on human beings, animals, plants and environment such as :
1. Skin cancer.
2. Damage of eyes; also increase in incidence of cataract disease in eyes.
3. Damage to the immune system.
4. Increased embryonic mortality in animals and humans.
5. Decreased crop yields.
6. Reduced populations of phytoplankton, zooplankton and certain fish larvae that are important constituents of aquatic food chains.
7. Smog formation.