Question

Rotten plants and animals are mixed with the soil​

Answer 1

Answer:

Humus is dark, organic material that forms in soil when plant and animal matter decays. ... 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.

Explanation:

Answer 2

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In mathematics, the irrational number are all the real number which are not rational number. The irrational number cannot be expressed as ratio of two integer.