character: National Geographic Education
topic: Energy Transfer in Living Organisms
grade: 9
subject: Biology
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character: National Geographic Education
topic: Photosynthesis and Cellular Respiration
grade: 9
subject: Biology
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character: National Geographic Education
topic: Bioenergetics and Metabolism
grade: 9
subject: Biology
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character: National Geographic Education
topic: Ecological Energy Flow
grade: 9
subject: Biology
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