Question

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give reason for
Topsoil has more humus than subsoil

Answer 1

Hola

Here is your answer. Yes this statement is true.Humus is formed by the dead plants and animals or waste in forest.
When plants die and animals die there body decomposes and becomes humus and it remains in topsoil so its said that crops are grown well in an good fertile and humus area as humus helps a lot in growing crops.

Hope it helps!

Answer 2

humus is dead and decaying matter present in soil thus we can say that topsoil has more humus than subsoil as dead and decaying matter present in top soil