Question

why flow of nutrient is cylic while energy flow in a food chain is unidirectional​

Answer 1

Answer:

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.

Explanation:

Answer 2

Answer:

Nutrients move in a cyclic form as there should be a balance of nutrients in different resources of the environment. ... Energy flow in an environment is unidirectional. Sun is the primary source of energy to all the living organisms on earth.