Question

in a food chain explain why the number of frophic levels are seldom more than four and five
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Answer 1

Answer:

Energy is passed up the food chain from one trophic level to the next. ... The rest of the energy is used for metabolic processes or lost to the environment as heat. As a result, less energy is available to organisms at each successive trophic level. This explains why there are rarely more than four or five trophic levels.