Question

Dark coloured organic matter that makes soil fertile ​

Answer 1

Answer:

humus

Explanation:

The thick brown or black substance that remains after most of the organic litter has decomposed is called humus. Earthworms often help mix humus with minerals in the soil. Humus contains many useful nutrients for healthy soil. One of the most important is nitroge

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Answer 2

Answer:

humus

Explanation:

The thick brown or black substance that remains after most of the organic litter has decomposed is called humus. Earthworms often help mix humus with minerals in the soil. Humus contains many useful nutrients for healthy soil. One of the most important is nitrogen