Image:Volcanic injection.jpg

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Schematic of volcano injection of aerosols and gases.

This image is a work of a United States Geological Survey employee, taken or made during the course of the person's official duties. As a work of the United States Government, the image is in the public domain. For more information, see the USGS copyright policy. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

Source: http://pubs.usgs.gov/of/of97-262/of97-262.html (figure modified from Richard Turco in American Geophysical Union Special Report: Volcanism and Climate Change, May 1992)

Acid rain also occurs from air pollution.

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