The largest hole in the ozone layer was observed in 1974.
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Q79: The approximate altitude of auroral displays is:
A)above
Q81: There is no well- defined thermopause.
Q84: Ozone is continually created in our atmosphere
Q86: The rise of atmospheric carbon dioxide levels
Q88: The tropopause is found where the air
Q99: The depletion of stratospheric ozone is primarily
Q106: The oceans cover about 50 percent of
Q108: The biosphere interacts with the lithosphere, the
Q109: Weather occurs in the thermosphere.
Q117: There is a sharp and definable boundary
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