Question

1. each layer of a soil profile is called a ________. a. horizon b. horizontal c. humus d. litter

Explanation:

In soil science, each layer of a soil profile is known as a horizon. A horizon is a layer generally parallel to the soil surface, with distinct physical and chemical properties. Horizontal is a direction, humus is decomposed organic matter, and litter is plant - derived material on the soil surface.

Answer:

A. horizon