Humus is an organic material that makes up soil. Which characteristic best indicates that soil has a high humus content?
the color of the sample the mass of the sample the amount of clay in the sample the amount of rock in the sample
Question: Humus is an organic material that makes up soil. Which characteristic best indicates that soil has a high humus content?
A. the color of the sample
B. the mass of the sample
C. the amount of clay in the sample
D. the amount of rock in the sample
Answer: