Question

why energy flowis called as ONE WHY transport​

Answer 1

So, the energy that is captured by the producers does not revert back to the Sun and the energy transferred to the herbivores does not come back to the producers. It just keeps on moving to the next trophic level in a unidirectional way. That is why the flow of energy in the food chain is always unidirectional/one way.

Answer 2

Answer:

the flow of nutrients is an ecosystem is considered be a 'one way' transport .plant is an ecosystem are called primary consumers.