EVERYDAY SCIENCE

Detailed explanation-1: -Air pollutants come from a variety of natural and manmade sources. Natural sources can include windblown dust, and soot from wildfires. Manmade sources can include motor vehicles, electric utility and industrial fuel burning, and manufacturing operations.

Detailed explanation-2: -The main sources of pollution are household activities, factories, agriculture and transport. Once they have been released into the environment, the concentration of some pollutants is reduced by dispersion, dilution, deposition or degradation.

Detailed explanation-3: -Pollution enters the Earth’s atmosphere in many different ways. Most air pollution is created by people, taking the form of emissions from factories, cars, planes, or aerosol cans. Second-hand cigarette smoke is also considered air pollution. These man-made sources of pollution are called anthropogenic sources.

Detailed explanation-4: -Photochemical smog is not a natural source of air pollution. It is mainly caused due to vehicle emissions and industrial fumes.