Question

Why does humus content increase in soil??​

Answer 1

Answer:

Humus is the mixture of dead and decaying organic matter...Adding compost manure or humus to soil increases soil fertility because of the presence of useful minerals in humus.

These nutrients and minerals especially nitrogen is directly absorbed by plant through the soil.

Answer 2

Explanation:

the leaves in the forest after they are withered fall on the groud and decompose and the animal waste is absorbed which is also helpful in increase in fertility of the soil.

This is how the fetility increases..

Hope it helps...