Question

give reason why a food chain cannot have more than four trophic levels ?​

Answer 1

Answer:

Energy is passed up a food chain or web from lower to higher trophic levels. ... This loss of energy explains why there are rarely more than four trophic levels in a food chain or web. Sometimes there may be a fifth trophic level, but usually there's not enough energy left to support any additional levels

Explanation:

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Answer 2

Answer:

The loss of energy at each step of food chain is so great that very little usable energy remains after four trophic levels. Hence, food chains generally consist of . only three or four steps.