Define (i)food chain and (ii)food webs. why are they unidirectional?
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The flow of energy in the ecosystem is unidirectional. The energy enters the plants (from the sun) through photosynthesis during the making of food. This energy is then passed on from one organism to another in a food chain. ... This energy is then passed on from one organism to another in a food chain.
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the chain in which one organism is depend on other organism for food is called food chain.
In food web organism depend on more than one organism for food.
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