_-_What are CFCs ?¿?_-_​

Chlorofluorocarbons and hydrochlorofluorocarbons are fully or partly halogenated paraffin hydrocarbons that contain only carbon, hydrogen, chlorine, and fluorine, produced as volatile derivative of methane, ethane, and propane. 

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polar areas, such as antarctica or the south pole.

what events in mexico's history might explain why the country continues to have difficulty improving social justice and economic opportunities for all people?