Air pollution is a major problem around the world. Air pollution is made up of harmful substances (particles) in the air. These can be gases, solids, or liquids. They can hurt people, animals, plants, and buildings.Have you thought about what air you breathe? Only 10% of the air in earth we breathe is clean, and a reason that the other 90% is not clean is air pollution.
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These images are some examples of air pollution around the world. Look how bad that looks.
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