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subsoil |
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subsoilLayer (stratum) of earth immediately below the surface soil, consisting predominantly of minerals and leached materials such as iron and aluminum compounds. Humus remains and clay accumulate in subsoil, but the teeming macroscopic and microscopic organisms that make the topsoil rich with organic matter spend little time in the subsoil layer. Below the subsoil is a layer of partially disintegrated rock, and underlying bedrock. Stripping topsoil while clearing land for crop growth or commercial development exposes the subsoil and increases the rate of erosion of soil minerals. subsoil a. the layer of soil beneath the surface soil and overlying the bedrock b. (as modifier): a subsoil plough How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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As with any cognitive structure, these identity frames are substrata of representations, judgments, and actions. As a foreign correspondent drilling down into the political substrata of two countries and then extrapolating to the immediate surroundings, Friedman did enough reporting and learned enough local history to give his flip descriptions the weight of authenticity (at least to an outsider). Inhibition by the substrata analogue N-oxaloglycine and its derivatives. |
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