Answer:
The largest source of air pollution is automobile.
Step-by-step explanation:
Automobiles are a major source of air pollution with the emission particulate matter and fog forming toxic emissions. In many countries, people are living in areas with poor air quality than recommended.
Poor air quality affects health by increasing respiratory ailments such as bronchitis, asthma, and more serious diseases like cancer. Pollutants from vehicles also increase the content of greenhouse gases which affect climate. The pollutants include nitrogen oxide, carbon dioxide, carbon monoxide, hydrocarbons, and many more.