________ are the primary source of organic matter in soils.
A)Earthworms
B)Microorganisms
C)Plants
D)Mammals

Question

Quizplus · Accepted Answer

Plants are the primary source of organic matter in soils as they produce the organic matter during photosynthesis and also contribute to the soil through root exudates and decaying plant material. Earthworms, microorganisms, and mammals may contribute to the breakdown and recycling of organic matter in soil but they are not the primary source of it.

________ Are the Primary Source of Organic Matter in Soils