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| Hey Bob, do you have any ideas on how to stamp out air pollution? | |
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| No Sir! But I will start researching ideas right now! | |
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| Most air pollution is the result of human activities, but pollutants can also come from natural sources. | |
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| Did you say air pollution? Household products, power plants, and motor vehicles are sources of primary air pollutants. | |
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| ..Vehicles are also a major source of nitrogen oxide emissions..Whenever something burns, pollutants enter the air..hmm..Interesting! | |
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| You're getting somewhere Bob! Keep up the good research! | |
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