2.5 5 billion tons of U.S. soil are eroded every year. - PowerPoint PPT Presentation

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2.5 5 billion tons of U.S. soil are eroded every year.

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4.5 pounds of garbage per person per day. (U.S.) (2005) (Municipal Solid Waste) ... Source: United Nations, World Population Prospects, The 1998 Revision; and ... – PowerPoint PPT presentation

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