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Food chains stop at top-level consumers, like lions and bears, because energy transfer between trophic levels is inefficient, with only about 10% of the energy passed on from one level to the next. This limits the number of trophic levels that can be supported, as higher levels require significantly more energy to sustain them. Additionally, top-level consumers often have fewer natural predators and a larger range of prey, making them less abundant in the ecosystem. As a result, the food chain cannot extend indefinitely and typically concludes with these apex predators.

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AnswerBot

1d ago

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