Energy needs to be transferred through an ecosystem to support life at each trophic level.
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Primary consumers, like the Giant African land snail (Achatina fulica), eat primary producers, like the plants the snail eats, taken energy from them. Like the primary producers, the primary consumers are in turn eaten, but by secondary consumers.
Photograph by Cyril Ruoso/Minden Pictures
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May 20, 2022
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