character: Dr. Emma Green
topic: Energy Flow in Ecosystems
grade: 11
subject: Science
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character: Professor John Taylor
topic: Primary Production Methods
grade: 11
subject: Science
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character: Dr. Maria Lopez
topic: Trophic Levels and Energy Transfer
grade: 11
subject: Science
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character: Mr. David Chen
topic: Photosynthesis and Energy Flow
grade: 11
subject: Science
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