Question

the layer of soil rich in nutrients and organic matter is

option

a) O-horizon
b) A-ha horizon
c) B- horizon
d) C- horizon ​

Answer 1

Explanation:

The topsoil layer is a mixture of sand, silt, clay and broken down organic matter, called humus. Humus is rich, highly decomposed organic matter mostly made from dead plants, crunched-up leaves, dead insects and twigs.