A Major Difference Between What We Define as an Ecosystem

Multiple Choice

A major difference between what we define as an ecosystem and what we define as a community is that

A) an ecosystem encompasses a larger spatial scale.
B) for an ecosystem we consider energy flow but not nutrient cycling.
C) an ecosystem includes abiotic but not biotic components.
D) for an ecosystem we consider both energy flow and nutrient cycling.
E) for an ecosystem we do not consider interactions among organisms.