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Message: <blockquote data-quote="catlover1" data-source="post: 1680506" data-attributes="member: 300696">Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms (Wikipedia). There are many causes of air polution including _____(put what the main causes are). Air pollution has many affects on humans, including asthma and other breathing problems. *Then start the body (1st paragraph on cause of air pollution, 2nd on what asthma is, and 3rd on how it effects people with asthma)</blockquote>