Question

Why is excessive use of chlorofluorocarbons a cause of concern

Answer 1

When CFCs reach upper layers of the atmosphere, they cause depletion ofozone layer and allow harmful UV radiations to reach the surface of the earth to create health hazards.

Answer 2

Excessive use of CFC'S is harmful for humans... because it effects the ozone layer which helps us from UV RAYS release by sun which is harmful for humans which can led to SKIN CANCERS... so excessive use of CFC'S is a cause of concern....