The ozone layer, or ozonosphere layer (very rarely used term), is the part of the Earth's atmosphere which contains relatively high concentrations of ozone (O3). ... In the early 1970s, researchers began to investigate the effects of various chemicals on the ozone layer, particularly CFCs, which contain chlorine.
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in.answers.yahoo.com/question/index?qid=20070402233235A...
in.answers.yahoo.com/question/index?qid=20070402233235AAXRmZt
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We have good reason to be concerned about the thinning of the ozone layer in the stratosphere. We also have good reason to be concerned about the buildup of ozone in the troposphere. Although simplistic, the saying "Good up high and bad near by," sums up ozone in the atmosphere.
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www.windows.ucar.edu/tour/link=/earth/Atmosphere/layers...
www.windows.ucar.edu/tour/link=/earth/Atmosphere/layers_activity_print.html
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Plummeting temperatures high in the Earth's atmosphere are doubling the rate at which the ozone layer is being destroyed. ... The destruction is particularly high over the Arctic and Northern Europe and could lead to an ozone hole as large as the one over the Antarctic.
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news.bbc.co.uk/hi/english/sci/tech/newsid_332000/332213...
news.bbc.co.uk/hi/english/sci/tech/newsid_332000/332213.stm
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Hydrofluorocarbon (HFC): a compound consisting of hydrogen, fluorine, and carbon The HFCs are a class of replacements for CFCs. Because they do not contain chlorine or bromine, they do not deplete the ozone layer. ... All HFCs have an ozone depletion potential of 0. Some HFCs have high GWPs. HFCs are numbered according to...
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www.epa.gov/ozone/defns.html
www.epa.gov/ozone/defns.html
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Usually there is a fine balance between the build up and loss of ozone. However, in the 1970s it was discovered that man-made chemicals called CFCs were destroying the ozone in the ozone layer. ... CFCs contain chlorine which reacts with ozone at the low temperatures high up in the atmosphere. Once the chlorine has broken...
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www.ace.mmu.ac.uk/eae/ozone_depletion/Younger/Causes.ht...
www.ace.mmu.ac.uk/eae/ozone_depletion/Younger/Causes.html
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The ozone in this region is commonly known as the ozone layer. ... At the Earth's surface, ozone comes into direct contact with life-forms and displays its destructive side (hence, it is often called "bad ozone"). Because ozone reacts strongly with other molecules, high levels of ozone are toxic to living systems.
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www.ozonelayer.noaa.gov/science/basics.htm
www.ozonelayer.noaa.gov/science/basics.htm
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Antarctic Ozone Hole Shrinking Because Of Mild Weather, Not Recovery (October 22, 2007) — Although the ozone layer over the Antarctic this year is relatively small, this is due to mild temperatures in the region's stratosphere this winter and is not a sign of recovery, the United Nations ...
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www.sciencedaily.com/articles/o/ozone_layer.htm
www.sciencedaily.com/articles/o/ozone_layer.htm
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Stable gravity well/high energy potential: ... ii. By hot I mean temperatures at which rocks liquefy. ... i. Another consequence of Earth developing an atmosphere consisting of significant quantities of molecular oxygen was the development of the Earth's ozone layer. Ozone is a ringed, trimeric form of oxygen that...
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www.mansfield.ohio-state.edu/~sabedon/biol1010.htm
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