The size of a food chain can vary, but the number of levels that a food chain can reach is limited. Why does this limit exist ?

Energy is lost at each trophic level.

Explanation:

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D. Energy is lost at each trophic level.

Explanation:

Edge 2021

answer; /// i believe the correct answer is (reactants);

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.