Which pollutant is present in air as particulate matter?
A) soot
B) ozone
C) sulfur dioxide
D) carbon monoxide
Correct Answer:
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Q2: A(n) _ is a fixed number of
Q10: The _ concentration in the air over
Q15: Which component of the air is an
Q17: What is the primary component of an
Q17: A particular sample of air is 2.5%
Q19: The burning of coal produces sulfur dioxide,SO2,a
Q22: Which process does not involve a chemical
Q23: In general,which airborne material is not likely
Q24: Which diagram(s)best represent(s)only diatomic molecules? 
Q25: Which color,as used in the Air Quality
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