Which of the following is a one-way cycle?

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(C) In an ecosystem,energy flow is unidirectional or one-way. Energy enters the ecosystem from the sun,is captured by producers,and then flows through

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Free energy cycle

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(C) In an ecosystem,energy flow is unidirectional or one-way. Energy enters the ecosystem from the sun,is captured by producers,and then flows through various trophic levels as it is transferred from one organism to another. At each transfer,a significant portion of energy is lost as heat,meaning it cannot be recycled back to the producers. In contrast,nutrient cycles like $CO_2$,$H_2O$,and $O_2$ are biogeochemical cycles where matter is continuously recycled between the biotic and abiotic components of the ecosystem.

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