Ozone
In this paper, evidence will show how ozone layer depletion is a problem. Harmful chemicals, produced by man, and nature, effect the ozone layer, a part of the earth’s atmosphere. The earth has environmental problems, and ozone layer depletion is just one of them. The ozone layer is a layer of irritating, corrosive, colorless gas that absorbs 97-99% of the sun’s high frequency ultraviolet light, which is damaging to life on earth. ( Sparling, “Ozone Depletion”) Ozone layer depletion’s history dates back to as early as 1956. In 1956, the first ground based measurements were taken in Halley Bay, Antarctica. The in the 1970’s, satellite measurements were started. The first comprehensive worldwide satellite measurement happened in 1978 with the NIMBUS-7 satellite. The NIMBUS-7 carried on it two things, the TOMS (total ozone mapping spectrometer), and the SBUV (solar backscatter UV meter). The NIMBUS-7, along with other instruments, measured the amount of chlorofluorcarbons in the atmosphere. Chlorofluorcarbons were first created in 1928 as a non-toxic, non-flammable refrigerant, by a commercial company called DuPont. CFC-12 was the first type of chlorofluorcarbon (1 single carbon w/ 2 chlorines, & 2 fluorine’s) created. (
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Some common words found in the essay are:
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Approximate Word count = 1553
Approximate Pages = 6 (250 words per page double spaced)
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