Pollution
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Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance or energy. Pollutants, the components of pollution, can be eith
Smog in the center of Moscow, Russia in August 2010
An industrial area, with a power plant, south of Yangzhou's downtown, China
A litter trap catches floating waste in the Yarra River, east-central Victoria, Australia.
Air pollution control system, known as a thermal oxidizer, decomposes hazard gases from industrial air streams at a factory in the United States.
Marine pollution
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Marine pollution occurs when substances used or spread by humans, such as industrial, agricultural, and residential waste; particles; noise; excess carbon dioxide; or invasive organisms enter the ocea
While marine pollution can be obvious, as with the marine debris shown above, it is often the pollutants that cannot be seen that cause most harm.
Acid mine drainage in the Rio Tinto River
Can floating in the ocean
Beach littered with garbage