The material objects involved in the biogeochemical cycle are________
A. Elemental
B. Carbon-containing carbohydrates, fats, proteins, and other substances unique to living organisms
C. compounds
D. Chemical elements such as C, H, O, N, etc.
Answer:D
The material objects involved in the biogeochemical cycle are________
A. Elemental B. Carbon-containing carbohydrates, fats, proteins, and other substances unique to living organisms C. compounds D. Chemical elements such as C, H, O, N, etc.