Question

why is the length of food chain in ecosystem generally limited to three or four tropic level explain with an example

Answer 1

in simple language the length of food chain is limited because we know about the 10% law which tells that only 10% energy of the trophic level is transferred to the other and if there are 4 or more members in a food chain then the top consumer of the chain will not get eenough energy to survive
hope it helps you