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It's called humus.
If the rock has been eroded into grains, then the mixture is known as top soil.
Humus.
a mixture of weatherted rock and humus would usually be refered to as a soil. However, there are many different classifications for what a soil actually is, and there are many different types of soil. It is also true than any weathered material on the surface of the earth can be called regolith.
It is called humus.
Humus
the decaying matter in soil is called humus.
The formation of complex organic matter in soil is called Humus
HUMUS !:)
The organic matter in soil is called humus.
Loam, which is a mixture of clay, sand & humus.
Loam, which is a mixture of clay, sand & humus.