Which fuel type is released into the atmosphere during combustion that contributes to air pollution?

Gasoline is a fossil fuel that contains hydrocarbons, which when burned during the combustion process, release a variety of pollutants into the atmosphere. These include carbon monoxide, nitrogen oxides, volatile organic compounds, and particulate matter, all of which contribute to air pollution and can have harmful effects on human health and the environment.

The combustion of gasoline also produces greenhouse gases like carbon dioxide, which is a significant contributor to climate change. In contrast, renewable fuels and ethanol generally produce fewer emissions, and hydrogen, when used in fuel cells, produces only water vapor as a byproduct, making it a much cleaner alternative in terms of air quality.