Changes

'''Chlorofluorocarbons''', often referred to as CFCs, or by the brand name for one formulation, ''Freon'', are [[man-made]], stable, and nontoxic [[chemical]]s used primarily as refrigerants and aerosol propellants.  

'''Chlorofluorocarbons''', often referred to as CFCs, or by the brand name for one formulation, ''Freon'', are [[man-made]], stable, and non-toxic [[chemical]]s used primarily as refrigerants and aerosol propellants.  

In 1984, scientists discovered CFCs to be one cause of the depletion of the [[ozone]] layer,{{fact-science}} which acts as a filter for ultraviolet light. Because of this, many nations signed the Montreal-London Protocol. This [[treaty]] calls for the production of CFCs to be stopped by the year 2000 for industrialized countries and the year 2010 for developing countries. The United States stopped production of CFCs in 1995, and alternate chemicals are used in their place.

In 1984, scientists discovered CFCs to be one cause of the depletion of the [[ozone]] layer,{{fact-science}} which acts as a filter for ultraviolet radiation from the [[Sun]]. Because of this, many nations signed the Montreal-London Protocol. This [[treaty]] called for the production of CFCs to be stopped by the year 2000 for industrialized countries and the year 2010 for developing countries. The United States stopped production of CFCs in 1995, and alternate chemicals are used in their place.

[[category:Chemistry]]

[[category:Chemistry]]

[[category:Environment]]

[[category:Environment]]