The main pollutant present in automobile exhaust is carbon monoxide (CO). It is a colorless, odorless gas that is produced when gasoline is burned in an engine. CO can be harmful to human health because it can bind to hemoglobin in the blood and prevent it from carrying oxygen to the body’s tissues. This can lead to a condition called hypoxia, which can be fatal.
Carbon dioxide (CO2) is another pollutant that is produced by automobile exhaust. CO2 is a greenhouse gas that contributes to climate change. However, CO2 is not as harmful to human health as CO.
Nitrogen oxides (NOx) are also produced by automobile exhaust. NOx can react with other pollutants in the atmosphere to form ground-level ozone, which is a harmful air pollutant.
Hydrocarbons are also produced by automobile exhaust. Hydrocarbons can contribute to smog and can
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