character: Mr. Patel
topic: Trophic Levels and Energy Transfer
grade: 9
subject: Biology
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character: Ms. Johnson
topic: Food Chains and Ecosystems
grade: 9
subject: Biology
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character: Mr. Lee
topic: Energy Flow in Ecosystems
grade: 9
subject: Biology
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character: Dr. Smith
topic: Biomagnification and Trophic Levels
grade: 9
subject: Biology
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