mention causes for depletion of ozone layer
Well done Deepti and Gupta. Keep posting. Just want to add some other causes which leads to depletion of ozone layer :-
1. Use of Chlorofluorocarbon (CFC's) in refrigerators and air conditioners. These CFC depletes ozone by reacting with the ozone and breaking it to oxygen.
2. Water vapours prevents formation of ozone.
3. Compounds of bromine and bromine oxide
4. Compounds of chlorine like carbontetrachloride and methylchloroform.