Question

most humus is preset in the top layer.
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Answer 1

Answer:

yes the most humus is present in the top layer

Answer 2

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topsoil

Soil is usually layered. The uppermost layer is called topsoil and this layer contains humus, plant roots, and living creatures. The more humus found in topsoil, the more nutrient rich the topsoil and the better the conditions for growing plants.