Author Question: Which substance is the most abundant primary air pollutant in the United States? A) sulfur oxide ... (Read 23 times)

notis

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Which substance is the most abundant primary air pollutant in the United States?
 A) sulfur oxide
  B) any volatile organic compound
  C) nitrogen oxide
  D) carbon monoxide

Question 2

What pattern is most likely associated with clear skies and fair weather?
 A) high pressure regions
  B) low pressure regions
  C) a cold front
  D) a warm front



rekilledagain

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Answer to Question 1

D

Answer to Question 2

A



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