What discovery by scientists in 1985 led to the banning of chlorofluorocarbons (CFCs)in 1987?
A) a hole in the ozone layer over the Antarctic
B) an unprecedented rise in the average temperature of the earth's atmosphere
C) particulate matter levels in the air that exceeded the World Health Organization's guideline levels
D) a causal relationship between lung cancer and chlorofluorocarbons

Question

Quizplus · Accepted Answer

Scientists discovered a hole in the ozone layer over the Antarctic in 1985, which was caused by the release of chlorofluorocarbons (CFCs) into the atmosphere. This discovery led to the international ban on CFCs in the Montreal Protocol in 1987.

What Discovery by Scientists in 1985 Led to the Banning