The food chains present in the food web do not have more than 5 trophic levels. Why is there a limit to the number of trophic levels a food chain can support?

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:

the answer is a or when it says crossing over

answer; i believe that the correct answer is(d) nondisjunction during meiosis;