Q.Ozone depletion will cause:

Ozone depletion is linked with global warming, since the same chlorofluorocarbon (CFC) and related halogenated gases that destroy stratospheric ozone are also strong greenhouse gases, and changes to the ozone layer alter how the atmosphere retains heat.

The stratospheric ozone layer absorbs most of the sun's harmful ultraviolet (UV) radiation. Its depletion, mainly by chlorofluorocarbons (CFCs), halons and related compounds, allows more UV radiation to reach the earth's surface. These same ozone-depleting substances are also powerful greenhouse gases in their own right, so their build-up in the atmosphere contributes directly to trapping infrared radiation and warming the planet, i.e., to global warming. The other listed effects — forest fire, eutrophica …