This site is part of the US Department of Agriculture\'s Natural Resource\'s Conservation Service, providing state-of-the-art soil survey technology, standards, data, and expertise. This site covers soil quality, hydric...
Soil is essential for life on Earth. It is needed for food, air, clothing and so much more. Discussion topics include the terms 'soil', 'dirt', and 'sediment', factors affecting the formation of soils, soil horizons,...
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