Soil
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| - | + | A '''soil''' is earth material, derived from rock and modified by climatic and organic processes. Top soil is generally more fertile and suitable for [[grass]] and other plant growth than lower layers of soil. Also called ''humus''. | |
Revision as of 16:23, 6 August 2009
A soil is earth material, derived from rock and modified by climatic and organic processes. Top soil is generally more fertile and suitable for grass and other plant growth than lower layers of soil. Also called humus.
