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ozone was first identified and measured in the late 1800s. The ozone was intersting to the Scientists because the air currents in the stratosphere move the ozone around the earth.
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The ozone form over the equator, where the rays of sunlight are the strongest, and then flows toward the poles. Then the ozone make a convenient marker to follow the flow of aor in the stratosphere.
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A Chlorofluorocarbon is a subtance that consists of Chorine, Fluorine and carbon. They are all made in the laboratory and do not occur naturally.
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British antarctice team measurement that the ozone layer was thinning over Antarctica
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when the oxygen gas is exposed to ultraviolet radiation in the upper regions of the stratosphere ozone is formed
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