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Question
Why is there stepwise decline of energy in a food chain?
Short Answer
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Solution
Stepwise decline occurs because at every trophic level a large portion of energy is lost as heat during respiration, a part is not assimilated (passed as faeces) and a part remains unutilised; only about 10% is transferred to the next level.
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Chapter 18: Ecosystem - EXERCISES [Page 1025]
