What causes air pollution are unwanted chemicals that are released into the air. Sometimes natural causes like volcanoes add to the collection of pollutants. But usually, these are the least of our problems. The greatest causes of air pollution are factories and cars. Practically everyone's seen a factory before. The building has long chimneys pointing to the sky, emitting large amounts of smoke-like pollutants. The smoke joins the air and sometimes mixes with the clouds to make dirty rain. Sometimes, smoke joins with fog to form smog, a visible pollution that depicts a gray fog. Countries like China are polluted, making it difficult for citizens to breathe. They wear masks over their mouths and nose to prevent most pollutants entering the body. Cars are a major cause of pollutants. Vehicles burn fossil fuels, which is a natural oil found deep within the Earth. Fossil fuels are dead animals and plants with their organic compounds forming into oil over generations. After the car uses the gas, the exhaust pipe releases dangerous particles that could cause the Earth danger. Fossil fuels that cars use are diesel and gasoline. Other chemicals include pesticides, hair sprays, paints, etc.
Common Pollutants There are about six common pollutants that have been released into the air and contributing majorly to air pollution.