An ecosystem includes ________ along with ________.
A. macroorganisms / microorganisms
B. living organisms / their chemical and physical environments
C. pathogenic organisms / non-pathogenic organisms
D. single celled organisms / multi-cellular organisms
Answer:B
An ecosystem includes ________ along with ________.
A. macroorganisms / microorganisms B. living organisms / their chemical and physical environments C. pathogenic organisms / non-pathogenic organisms D. single celled organisms / multi-cellular organisms