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Chlorofluorocarbons (CFCs)
Part one of term paper
CFCs are a family of man-made gases used for various industrial
purposes. First developed in the 1920's in the United States, CFCs have
been used in large quantaties since 1950. The industrialized countries can
account for over 80% of CFCs use. CFC-11 is used primarily as a propellant
in aerosol cans, although its use has been phased out i ...
Part two of term paper
... and carbon tetrachloride are used as solvents for
cleaning, carbon tetrachloride is also a feed stock for the production of
CFC-11 and CFC-12.
CFCs are released in relatively small quantities, but one kilogram
of the most common CFCs may have a direct effect on climate 1000 times
large than that of one kilogram of carbon. In addition over the last two
decades the percentage increase of CFCs in the atmosphere has been higher
than any other greenhouse gas. By 1990 the increase was 4-12% a year.
...
Word count: 697 | Approximate pages: 3
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