Question

B. Fill in the blank= 1. A-horizon is commonly known as

Answer 1

Answer:

Topsoil

Explanation:

A horizon is the top layer of the mineral soil horizons, often referred to as 'topsoil'. This layer contains dark decomposed organic matter, which is called "humus". The technical definition of an A horizon may vary between the systems, but it is most commonly described in terms relative to deeper layers.

Answer 2

A-horizon is commonly known as topsoil