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Agriculture Some pollution enters streams from a single point, such as a pipe. Agricultural pollution, on the other hand, is generally nonpoint source pollution. That is, it comes from pesticide and fertilizer runoff from fields, animal waste from feed lots, siltation (mud) from plowing near streams, and stream bank erosion caused by cattle. Many agricultural operations in the United States have addressed these problems and have identified farmers to be among the most cooperative landowners when it comes to the ethical treatment of Earth's resources. Because of the requirements of agriculture, farmers must keep in close touch with nature.
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Last updated January 11, 1999