Question

How the hole in the ozone layer was formed?​

Answer 1

Because so much solar radiation strikes the earth there, most ozone production occurs in the mesosphere near the Earth's equator. High energy ultraviolet radiation splits (photolyzes) an O2 molecule into 2O (two individual oxygen atoms). These free oxygen atoms quickly bond with an O2 oxygen molecule forming an O3 ozone molecule. 

Answer 2

the hole in the ozone layer was formed due to the excessive use of gases such as chlorofluorocarbons (CFS) which rises up in the atmosphere and deplete the ozone layer. CFS is mostly present in refrigerators in our homes....