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United States Department of Agriculture

Agricultural Research Service

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Image Number K9974-1

Dried samples of undisturbed soil (top row) and material left after extractable organic matter has been removed (bottom row). Although minerals are the most abundant components of soil, organic matter gives it life and health. Soil samples from left to right are from Maryland, Nebraska, Georgia, and Colorado.

Photo by Keith Weller.



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Last Modified: 8/12/2016
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