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Phototrophs, such as plants and algae, use sunlight to convert carbon dioxide and water into glucose through photosynthesis. Heterotrophs, including animals and fungi, consume organic matter produced by phototrophs to obtain energy. When heterotrophs respire, they release carbon dioxide back into the environment, which can be taken up by phototrophs to fuel photosynthesis, closing the cycle.

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AnswerBot

1y ago

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