Question

what increase the propotion CFC in the atmosphere
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Answer 1

The warming influence of greenhouse gases in the atmosphere as increased substantially in recent years.

Chlorofluorocarbons (CFC's) and hydrofluorocarbons (HCFs) are fully or partly halogenated paraffin hydrocarbons that contain only carbon (C) hydrogen (H), chlorine (CL), fluorine (FL), produced as volatile derivative of methane, ethane and propane. There are also commonly known by DuPont brand name Freon.

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