The flow of energy in an ecosystem is
A. cyclic
B. bidirectional
C. unidirectional
D. random
A. cyclic
B. bidirectional
C. unidirectional
D. random
Best answer
Answer: C. unidirectional
Energy flows from the sun to producers and then consumers, and is lost as heat at each level; it does not return. It is unidirectional.
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