Which statement is true regarding transportation as a source of air pollution?

Transportation is indeed a significant source of air pollution. The combustion of fossil fuels in vehicles, including cars, trucks, buses, and airplanes, releases various pollutants into the atmosphere. These pollutants include nitrogen oxides, carbon monoxide, volatile organic compounds, and particulate matter, all of which can contribute to poor air quality and have adverse health effects on the population.

Transportation contributes to air pollution primarily through emissions generated from internal combustion engines. As the number of vehicles on the road increases, so do emissions, which can lead to the formation of ground-level ozone and smog, particularly in urban areas. The effects are not limited to respiratory issues; they can also exacerbate cardiovascular problems and have a significant impact on vulnerable populations, such as children and the elderly.

Furthermore, the transportation sector is a major contributor to greenhouse gas emissions, which are linked to climate change. Efforts to reduce the environmental impact of transportation include promoting public transit, encouraging the use of electric vehicles, and creating policies to limit emissions from transportation sources. Therefore, recognizing the role of transportation in air pollution is crucial for developing effective environmental health strategies.