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Hi i have a question about air pollution that comes out of cars?!?!

where does it come from?
is it the smoke coming out the back of the car?!?!?

where !?!

  • questions -

    When the car burns fuel (either gasoline or diesel) it combines with oxygen and under the best of conditions would produce CO2 and H2O. However, with the heat of the engine (due to the combustion that is necessary to power the car) some carbon monoxide, NOx which is NO, NO2, and any other oxides of nitrogen, some SO2 or SO3 if the fuel contains any sulfur, and some other side reactions occur. The engine is made so that those gases are exhausted from the tail pipe. The air becomes polluted due to those exhaust gases. You can read more about it here.
    http://www.ucsusa.org/clean_vehicles/why-clean-cars/air-pollution-and-health/cars-trucks-air-pollution.html

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