Question

What are the destrutions of the ozone by chlorofluororcarbons?

Answer 1

increasing use of refrigirators and arir condistioners led to phenomena called depletion of ozone layer

Answer 2

Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion.
When ultraviolet light waves (UV) strike CFC* (CFCl3) molecules in the upper atmosphere, a carbon-chlorine bond breaks, producing a chlorine (Cl) atom. The chlorine atom then reacts with an ozone (O3) molecule breaking it apart and so destroying the ozone. ... A single CFC molecule can destroy 100,000 ozone molecules