Question

why energy flow through an ecosystem is one way

Answer 1

Because 2nd types of eater won't eat 1st type. Food producer won't eat any eater etc... The action is not reversible. Only takes place in one way.

Answer 2

HOLA META,,

Energy flow through an ecosystem is one way, because when the energy enters the plants (from the sun) during photosynthesis.This energy is then passed on from one organism to another in a food chain but it does not come back. Thus energy flow in an ecosystem is unindirectional.