Types of pollution are air pollution, water pollution, land pollution, and noise pollution. Air pollution involves the release of pollutants into the atmosphere, including carbon dioxide from burning fossil fuels and sulfur dioxide from coal burning, which can cause acid rain. Water pollution results from waste products from factories, sewage, power plants, and mining polluting water sources. Land pollution degrades the earth's surface through garbage, waste, and industrial and mining activities. Noise pollution disrupts humans and animals with excessive noise from sources like traffic and railways.