What is the function of air holes in the soil?

What is the major difference between MANURE AND HUMUS.

MENTION 3 POINTS FOR EACH....

ASAP!!! Sometimes u people won't answer!!!

Respuesta :

1) it allows air, water and nutrients (salts) to penetrate the soil and reach the plant roots and not just stay on the surface of the soil where the plant can't absorb it.