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How does automobile exhaust gases contribute to air pollution?

User Sgiri
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Answer:

The exhaust is the major source of air pollution. This is composed of completely oxidized constituents such as H2O and CO2, both of which are considered harmless. Emphasis is placed on the partially oxidized components -- nitrogen oxide, carbon monoxide, and hydrocarbons -- as being the major pollutants.

Step-by-step explanation:

User Nrabinowitz
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