(i) What is the cause of ozone depletion?

(ii) State the impact of ozone depletion on human life.

(i) The causes of destruction of ozone layer are:

1. Emission of Nitrogen Oxide by a large number of supersonic transport aeroplanes causes deterioration of ozone layer.
2. Release of synthetic chemicals primarily Chlorofluoro-carbons(CFCs) into the atmosphere is the most important cause of depletion of ozone layer.

(ii) Following are the impacts of ozone depletion on human life:

1. It will allow excessive radiation of ultraviolet rays which can render man and animal blind.
2. It can cause crop damage,
3. It can burn skin and cause cancer.