What causes air pollution? - Phys.org- pollutants resulting from the iron industry ,Natural forms of pollution are those that result from naturally-occurring phenomena. ... industry accounted for 21% of total ... Losing forests due to air pollution is a dangerous feedback effect ...Human Nature, Technology & the EnvironmentProblems of air and water pollution arising in the iron and steel industry. New York: United Nations, 1970. Southwick, Charles H., Ch. 15 from "Global Ecology in Human Perspective" Oxford Univ. Press, 1996, pp. 159-182.