Car exhaust fumes emissions 85.3 in three minutes. With more than 80 kinds of harmful substances. Carbon monoxide, hydrocarbon, lead dust and benzopyrene. Cars accounted for 60% of the total air pollution. People need the air to breathe to stay alive. More than 20,000 times an adult about breathing, inhaling air 15 to 20 cubic metres. Therefore, the polluted air are harmful to the human body.
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