Question

Substratum is just below the
(a) topsoil
O (b) subsoil
(c) humus
O bedro​

Answer 1

Answer:

(A) topsoil

Explanation:

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Answer 2

The answer is option (b)

Reason:

Substratum refers to a layer below the surface. The term is often used in soil science and it refers to the layer that lies below the surface layer and the subsoil. Soils typically have three major horizons: the surface horizon, the subsoil below that, and then the substratum.

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