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Question

Issue Sources Health/Environmental Effects
Carbon dioxide (CO2)
Chlorofluorocarbons (CFCs)
Ground-level ozone (O3)
Sulfuric acid (H2SO4)

Answer 1

What are two human sources of NO2 and other nitrogen oxides?

Answer 2

Nitrogen oxides are produced by burning fossil fuels in air (which is seventy percent nitrogen). Automobiles, power plants, gas stoves are examples.