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  • Indicate the flow of energy in an ecosystem. Why is it unidirectional Justify.

Indicate the flow of energy in an ecosystem. Why is it unidirectional? Justify.

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The flow of energy in an ecosystem is unidirectional and occurs in the following sequence:
Sun —— Producer ——— Herbivore —— Carnivore

(i) Energy flows dynamically starting with one trophic level then onto the next
(ii) Energy cannot return back to a trophic level.
(iii)Out of the total energy accessible, at a particular trophic level, only 10% is given to the next trophic level.
(iv) It is impossible for energy to flow in the reverse direction
(v) The accessible energy decreases at a higher trophic level as energy moves from lower level to higher level
(vi) Part of the energy is used by an organism for its needs and the remaining part is lost in energy transfer

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