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(B) The statement refers to the $2^{nd}$ law of thermodynamics. According to the $2^{nd}$ law of thermodynamics, energy transfer is never $100\%$ effi

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(B) The statement refers to the $2^{nd}$ law of thermodynamics. According to the $2^{nd}$ law of thermodynamics, energy transfer is never $100\%$ efficient, and some energy is always dissipated as heat, leading to an increase in the entropy of the system. In ecological systems, this is reflected in the $10\%$ law of energy transfer, where only about $10\%$ of the energy is transferred to the next trophic level, while the rest is lost as heat during metabolic processes.

"During the transfer of energy from one trophic level to another, some energy is lost as heat." Which law of thermodynamics does this statement represent?

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