The major source(s) of chlorofluorocarbons (CFCs) in the atmosphere was/were_______.
A) emissions from automobile exhaust and chemical fertilizers
B) combustion of fossil fuels
C) burning of fossil fuels and coal
D) refrigerants, solvents, and spray propellants
E) microbial fermentation of organic matter in coal mines, oil wells, and livestock
Correct Answer:
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