definition of humus
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the organic component of soil formed by the decomposition of leaves and other plant material by soil organisms.
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The dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth.
Explanation:
In soil science, humus denominates the fraction of soil organic matter that is amorphous and without the "cellular cake structure characteristic of plants, micro-organisms or animals". Humus significantly affects the bulk density of soil and contributes to its retention of moisture and nutrients.
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