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The top layer of soil where grass grows is called Humus. The next layer is the topsoil, and the layer after that is the subsoil.
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horizontal layer of soil is called horizon
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The top layer of soil where grass grows is called Humus. The next layer is the topsoil, and the layer after that is the subsoil.
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The dirt under grass can be called soil.
ground soil.
The topsoil is the finest soil layer. Soil 'layers' are called horizons.
horizontal layer of soil is called horizon
The thick mass of grass and soil is called the topsoil
they are called Horizons.
There are four layers and the four layers are top layer called the organic layer, Upper soil layer, middle soil layer, and the last one is lowest layer.