Question

why are there generally 3 to 4 tropic levels exists in each food chain​

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.

Answer 2

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.