Question

Give reason why a food chain cannot have more than four tropic levels

Answer 1

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.

Answer 2

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.

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