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When air pollution episodes occur they generally result from a dramatic increase in the output of pollutants.
Q8: A major part of the greenhouse effect
Q12: About 9% of the earth's land area
Q17: Of the primary air pollutants monitored by
Q19: The Internet began as a(n)<br>A)bet between two
Q30: The proportion of senators who are up
Q31: Cyclones usually move fastest in summer.
Q49: Multiple-vortex tornadoes help explain:<br>A)why one building is
Q77: _ assume(s)that the weather occurring upstream will
Q83: If a severe thunderstorm produces large hail,it
Q85: The latitude of a place is important