Chlorofluorocarbons (CFCs) are very common coolants that are used in air conditioners, refrigerators, and spray cans all around the world. They are severely needed for many of today's basic household necessities. The problem with CFCs, however, is that their ability to float high into the atmosphere, which eventually leads to depletion of the ozone layer. There is a lot of controversy over whether CFCs should be used, because of their danger in reducing the amount of ozone. It is clear, however, that the positive aspects of CFC use severely outweigh the negative effects of CFCs.
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