Depletion Of Ozone Layer

The ozone layer,a thin band in the stratosphere serves to shield earth from the sun's harmful ultraviolet rays.Chlorofluorocarbons chemicals used in refrigerator, air conditioning system etc destroy the ozone layer.CFC release chlorine into the atmosphere;chlorine,in turn,breaks down ozone molecules.Because chlorine is not affected by it's interaction with ozone,each chlorine molecule has the ability to destroy a large amount of ozone for an extended period of time.The consequences of continued depletion of ozone layer would be dramatic.Increased ultraviolet radiation would lead to a growing number of skin cancer and cataracts and also reduce the ability of immune systems to respond to infection.