A food chain has the following trophic levels:
Correct answer: A. 3 or 4
- A. 3 or 4
- B. 3
- C. 2
- D. 1
Explanation
Most natural food chains contain about three or four trophic levels because substantial energy is lost at every transfer. Longer chains become difficult to sustain due to this progressive energy loss.
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Practise Forest Ecology
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