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Plants do not eat. They make their own food through photosynthesis. The same is true of underwater plants. They use the carbon dioxide given off by living things through cellular respiration and carbon dioxide that dissolves into the water from the air, and the energy from sunlight that penetrates the water to make their own food through photosynthesis. Plants that live in deeper water have many different photosynthetic pigments available to them besides just chlorophyll.

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13y ago

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