The relationship between the amount of energy available for use and the amount of entropy in a food chain differs between trophic levels. Why would the amount of entropy increase from one trophic level to another in a food chain or energy pyramid?

At each trophic level, organisms use some of the energy they take in, and much of it is released as heat. This heat spreads energy out and increases randomization, or entropy, as energy moves through the food chain. Therefore, the best answer is “energy is lost at each level as heat, which increases randomization.”

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