Fluorocarbons were not present in the atmosphere before 1750. Today trichlorofluoromethane is present in the atmosphere at 242 to 244 parts per trillion .
Fluorocarbons were not present in the atmosphere before 1750. Today trichlorofluoromethane is present in the atmosphere at 242 to 244 parts per trillion
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Answer:
A.TRICHLOROFLOUROMENTHANE
Explanation:
Fluorocarbons were not present in the atmosphere before 1750. Today trichlorofluoromethane is present in the atmosphere at 242 to 244 parts per trillion .
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Answer:
Fluorocarbons were not present in the atmosphere before 1750. Today trichlorofluoromethane is present in the atmosphere at 242 to 244 parts per trillion