More than ____percent of the total PM2.5 particles emissions across the United States in recent years have been attributed to emissions from wildland fires.
A) 2
B) 5
C) 10
D) 25
E) 50
Correct Answer:
Verified
Q3: Sulfur-rich aerosols have the net effect of
Q9: Air pollutants can come from both natural
Q13: Collectively,particles of soot,smoke,dust,and pollen are called _.
A)hydrocarbons
B)aerosols
C)carcinogens
D)haze
E)CFCs
Q19: Sulfur dioxide (SO2)can enter the atmosphere naturally
Q20: The primary source for all pollutants is
Q22: Nitrogen dioxide (NO2)reacts with _ in the
Q23: The origin of the gases called oxides
Q29: The ozone hole is found in the
Q31: Ozone, PAN, and small amounts of other
Q37: The most abundant volatile organic compound is
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