Air pollution caused by human actions by man-made sources include industrial. Traffic. Burning of solid waste to produce power using fuel home appliances etc.
Air pollution caused by human action. Man-made sources include industrial solid waste incineration traffic. Electric power production The fuel inside the house, etc.
Air pollution caused by human activities, the "man-made sources include Boeing, as industrial Boeing Boeing traffic solid waste burning power generation." Fuel use, home, etc.