character: Mr. Johnson
topic: Human Digestive System Functions
grade: 9
subject: Biology
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character: Ms. Smith
topic: Overview of Digestion and Metabolism
grade: 9
subject: Biology
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character: Dr. Lee
topic: The Role of Enzymes in Digestion
grade: 9
subject: Biology
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character: Mrs. Garcia
topic: Nutrient Absorption in the Digestive System
grade: 9
subject: Biology
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