Why food chains are not enough?

1.	Why food chains are not enough?
Answer» 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.

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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Why food chains are not enough?

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