Question

decayed organic matter in the soil forms ------------------​

Answer 1

Answer:

dead and decayed organic matter in the soil forms humus, which increased the fertility of the soil.

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Answer 2

$\huge \underline \bold{Answer}$

Decayed organic matter in the soil forms humus.

Humus is the decayed form of organic materials in the soil. Matter like plant and animal wastes decomposed by the action of microorganisms, forms humus.