Question

as energy moves progressively through various ​

Answer 1

Answer:The flow of energy in food chain in unidirectional because the sun is the only source of energy for all ecosystems on earth. Then the energy is captured by the autotrophs does not revert back to the sun. Therefore, in the food chain, the energy moves progressively through various trophic levels.

Explanation:

Answer 2

Answer:

Because the energy moves progressively through the various trophic levels and is no longer available to the previous trophic level. ... Thus, flow of energy in food chain is always unidirectional.