Forestation helps the ozone. It doesn't deplete it.
CFC's could deplete ozone layer. they react with it to deplete the layer.
Ozone layer can be destroyed by CFC's. They react with ozone to deplete it.
CFC's deplete the ozone layer. They react with ozone to decompose it.
CFC's wreck our ozone layer. They react with ozone to deplete it.
CFC's are damaging the ozone layer. They react with it to deplete the layer.
CFC's go in the ozone layer. They deplete the ozone.
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They are depleting the ozone layer. they react with ozone and deplete it.
CFC's react with ozone. They deplete the ozone layer.
CFC's release fluorine and chlorine. They react and deplete ozone.
CFC's are affecting the ozone layer. They react with the layer to deplete it.
See "What is causing the depletion of the ozone layer?"