How do chlorofluorocarbons affect earth's ozone layer?

how do chlorofluorocarbons affect earth's ozone layer?How do chlorofluorocarbons affect earth's ozone layer?
The compounds provide electrons that are required to break the ozone molecule (O3) into O2 + O2-. there is no net transfer of electrons when the reaction goes to completion (the recombination of two free O2- into O2 returns the electrons back to the CFC), so the CFCs are still available to cause the destruction of numerous molecules of ozone (they are not consumed in the process, which is what makes them so destructive).How do chlorofluorocarbons affect earth's ozone layer?
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