• Pollution is a change in the environment that makes it undesirable for life. • Air pollution is due mainly to the burning of fossil fuels, release of chlorofluorocarbons, noise and radioactive fallout.
• Water pollution is caused by domestic refuse and sewage, industrial wastes, agricultural wastes, crude oil and heat.
• Soil pollution is caused by erosion brought about by agricultural practices, mining activist and deforestation, indiscriminate dumping of solid wastes is the most visible form of land pollution.
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