character: Mr. James Lee
topic: Oxygen Transport in the Body
grade: 9
subject: Science
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character: Hemoglobin
topic: Role of Hemoglobin in Oxygen Transport
grade: 9
subject: Science
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character: Red Blood Cells
topic: Functions of Red Blood Cells in the Circulatory System
grade: 9
subject: Science
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character: Alveoli
topic: Gas Exchange in the Lungs
grade: 9
subject: Science
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