CFCs have a continuing effect on the ozone layer as__________

Q. CFCs have a continuing effect on the ozone layer as__________

A.            they are efficiently absorbed by atmospheric water vapours

B.            they are being produced in increasing amounts all over the world

C.            Cl atoms formed by them are used up in reactions causing degradation of the ozone

D.            Cl atoms formed by them only act as catalysts in reactions causing degradation of the ozone

Answer: Cl atoms formed by them only act as catalysts in reactions causing degradation of the ozone