Question

energy flow in eco system is one way give reason

Answer 1

the primary source of energy flow in eco system is sun.

Answer 2

Yes, the flow of energy in an ecosystem is unidirectional. Of the total energy obtained in the form of food at each trophic level, some part is consumed by the organism itself, some is lost to the environment in the form heat and some part of energy is transferred to the next trophic level. The energy is never transferred or returned back to the previous trophic level.

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