Humus ____.
A)is the material always comprising the topmost soil horizon
B)is the dark, organic-rich material formed by bacterial decay
C)is also known as organic litter
D)always includes large amounts of sediments
E)forms from the chemical weathering of the parent rock

Question

Quizplus · Accepted Answer

Humus is the dark, organic-rich material formed by bacterial decay. It is not always comprising the topmost soil horizon and may not always include large amounts of sediments. Organic litter refers to dead organic material on the surface of the soil, while humus is the result of decomposition of that material. Humus does not form from chemical weathering of the parent rock.