Have you been looking all over the internet for a term paper? Stop looking now! Paper University has over 45,000 term papers all in one place. Our huge online paper library has college papers on all sorts of topics and they are all available for downloading or printing immediately. If you are thinking this will cost an arm and a leg, you are wrong! Get instant access to our members section for one low monthly price with no additional fees or long-term obligations. It doesn't matter if you are downloading one essay or one hundred. Join today and get the essay writing help that you need.

Chlorofluorocarbons (CFCs) Beginning of 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 propel .... Middle of Paper .... 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. CFCs also destroy ozone - itself a greenhouse gas - their net effect on climate is unclear. The strength of the indirect effect of ozone depletion depends on variables such as temperature of the upper atmosphere and cannot yet be measured with any confidence. According to new research, however, it is possible that the indirect effect of CFCs cancels out some or all of the direct .... 697 words | 3 pages Subscription Length Price Join 30 days membership (recurring) $19.95 90 days membership (recurring) $39.95 180 days membership (non-recurring) $69.95