The damage to the ozone layer is a cause for concern because :

• It causes skin darkening, skin cancer, aging, and corneal cataracts in human beings.
• It can result in the death of many phytoplankton leading to increased global warming.

To limit the damage to the ozone layer the release of CFCs into the atmosphere must be reduced CFCs used as refrigerants and in fire extinguishers should be replaced with environmentally-safe alternatives Also the release of CFCs through industrial activities should be controlled.