Question

Depletion of ozone layer with reaction

Answer 1

Chlorine initiates break down of ozone and combines with a free oxygen to create two molecule of oxygen thus chlorine is able to destroy ozone

Answer 2

Ozone depletion, gradual thinning of Earth's ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. ... The thinning is most pronounced in the polar regions, especially over Antarctica.