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Air pollution wikipedia from en.wikipedia.org
Air pollution is the contamination of air due to the presence of substances called pollutants in the atmosphere that are harmful to the health of humans and ...
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Air pollution is the introduction of chemicals, particulate matter, or biological materials into the atmosphere, causing harm or discomfort to humans or ...
Air pollution wikipedia from simple.wikipedia.org
Air pollution is a type of environmental pollution that affects the air and is usually caused by smoke or other harmful gases, mainly oxides of carbon, ...
Dec 7, 2016 · An air pollutant is a substance in the air that can have adverse effects on humans and the ecosystem. The substance can be solid particles, ...