Multiple Choice
Atmospheric nitrogen is converted to nitrogen oxides
A) when fuels are burned at high combustion temperatures.
B) if the sun is shining brightly and there is a temperature inversion.
C) on cloudy days when carbon and soot levels are unusually high.
D) if radon gas is present when gasoline is burned in automobiles.
Correct Answer:

Verified
Correct Answer:
Verified
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