The flow of materials and energy in an ecosystem is respectively:
Correct answer: B. Cyclic and linear
- A. Cyclic only
- B. Cyclic and linear
- C. Linear and cyclic
- D. Linear only
Explanation
Materials such as nutrients circulate repeatedly between organisms and the physical environment, whereas energy enters mainly as sunlight and leaves as heat. Hence material flow is cyclic and energy flow is linear.
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