Question

Why does top soil have more humus than the sub soil and parent rock

Answer 1

Hummus is the dead and rotting matter of plants and animals, and hummus is made with the help of decomposers which are microbes, mushrooms, microorganisms, and worm.

Decomposers can live in places where it is warm, sodden and oxygen-rich and where all these three are found in topsoil.

So the breaking down activity happens in topsoil effortlessly. That is the reason a ton of hummus is found in topsoil.

Another reason is that the dead plants and animals fall specifically onto the dirt and it gets disintegrated there itself, and the hummus remains in the topsoil.

Answer 2

because the animals live mainly in top soil and when they de compose the hum is is formed there and remain only there and the waste also produced by animals is produced there is also decomposed there and it remain there therefore top soil has more hum is than sub soil and pareblnt rock....

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