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In an ecosystem the energy flow is alway...

In an ecosystem the energy flow is always unidirectional.

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(1) In an ecosystem, the efficiecy of the producers in the absorption and converstion of the solar energy is very high.
(2) The major portion of the converted energy is used by the consumers.
(3) The energy captured by autotrophs never returns back to the solar energy.
(4) The energy obtained by the herbivores will never go back to the producers. This shows energy flow is always unidirectional in any ecosystem.
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