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Assertion (A): In an ecosystem, fl ow of energy follows the law of thermodynamics. Reason (R): In an ecosystem, the flow of energy is unidirectional and during the transformation of energy from one trophic level to the other, 80 - 90 per cent of energy is lost.

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Assertion (A): In an ecosystem, fl ow of energy follows the law of thermodynamics. Reason (R): In an ecosystem, the flow of energy is unidirectional and during the transformation of energy from one trophic level to the other, 80 - 90 per cent of energy is lost.






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