What is air pollution?

Air pollution is the presence of harmful or excessive quantities of substances in the air, such as gases, particles, and chemicals, that can have negative effects on human health, the environment, and wildlife. Sources of air pollution include vehicle emissions, industrial activities, burning of fossil fuels, and agricultural practices. Common pollutants include carbon monoxide, sulfur dioxide, nitrogen oxides, particulate matter, and volatile organic compounds. Air pollution can lead to respiratory problems, cardiovascular diseases, and other health issues, as well as contribute to climate change and damage ecosystems.

Air pollution is the presence of substances in the earth's atmosphere that are harmful to the health of humans and other living organisms, or that cause damage to the natural or built environment. It can be caused by both human activities and natural processes.