Cause of Concern: Ozone layer present in the stratosphere has thinned out by about 8% over the equator and more so over the Antarctica where a big ozone hole appears every year. This has increased the level of UV-B radiations reaching the earth by 15-20 %. These radiations are causing increased number of skin cancers, cataracts and reduced immunity in human beings. These causes increased incidence of blindness of animals, death of young ones, reduced photosynthesis, higher number of mutations and damage to articles.
Steps to Limit Damage :
(i) Ban on the production and use of halons.
(ii) Ban on production and use of chlorofluorocarbons.
