Question

........ and ........ gases are harmful to ozone layer​

Answer 1

Carbon dioxide and methane gas are harmful to ozone layer.

$\huge {Additional \: Info}$

A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range. Greenhouse gases cause the greenhouse effect on planets. The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone

Answer 2

chlorofluorocarbon(CFC) and Carbon tetrachloride