In the 1970s Congress banned the use of chlorofluorocarbons (CFCs) out of concern for problems pertaining to what environmental issue?

A) soil erosion eliminate
B) soil pollution
C) ozone depletion
D) water pollution

Respuesta :

C. Ozone depletion

CFC's (which is basically a type of gas) were banned in the 1970's when the environmental movement was starting to take hold because they were damaging the ozone layer by creating holes in it.