Flow of energy in a food chain is undirectional. Justify it?

1.	Flow of energy in a food chain is undirectional. Justify it?
Answer» The flow of energy in the ecosystem is unidirectional. The energy enters the plants (from the sun) through photosynthesis during the making of food. This energy is then passed on from one organism to another in a food chain. ... The energy available at each successive trophic level is 10 per cent of the previous level.

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