Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
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