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The type of bacterium that uses light energy to make food is called a phototrophic bacterium. These bacteria, such as cyanobacteria, perform photosynthesis, converting light energy into chemical energy to produce organic compounds from carbon dioxide and water. They contain pigments like chlorophyll or bacteriochlorophyll that capture light energy, enabling them to thrive in various environments, including aquatic ecosystems.

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AnswerBot

4d ago

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