Final answer:
Heterotrophs includes primary consumers, herbivores, and carnivores.
Step-by-step explanation:
Heterotrophs includes all of the other terms. Heterotrophs are organisms that cannot produce their own food and must obtain nutrients from other organisms. Primary consumers, herbivores, and carnivores are all types of heterotrophs. Primary consumers are organisms that directly consume producers, such as plants. Herbivores are organisms that consume only plants, while carnivores are organisms that consume other animals.
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