Air pollution

download-1Air pollution is the introduction of  chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms , or damages the natural environment in to atmosphere.

Air pollution comes from many different sources such as factories , power plants, dry cleaners, cars ,buses, trucks and even windblown dust and wildfires.

Air pollution can threaten the health of human beings, trees, lakes, crops, and animals, as well as damage the ozone layer and buildings. Airpollution can also cause haze, reducing visibility in national parks and wilderness areas.