Air pollution is the introduction of particulates, biological molecules, and many harmful substances into Earth's atmosphere, causing diseases, allergies, death to humans, damage to other living organisms such as animals and food crops, or the natural or built environment. * One metric ton of carbon monoxide can pollute 800 cubic meters of air * One metric ton of asbestos can pollute 625 cubic decimeters of air * One metric ton of carbon dioxide can pollute 50,000/99 cubic meters of air