Question

"Energy flow in food chain is always unidirectional". justify this statement

Answer 1

Hi there...
Energy flow is unidirectional because the energy is transferred from one tropic to other continues for ex:plant gives enrgy to the deer but deer doesnt gives that energy back to plants and this continues.So we can say that energy flow is unidirectional..
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Answer 2

the pesticides we use in crops enters to food chain as when we eat food that comes crops enter our body directly.But indirectly food eaten by primary consumer are eaten by secondary or tertiary consumers i.e human
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