character: Ms. Blue
topic: Understanding Oxygen Transport in the Body
grade: 9
subject: Science
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character: Dr. Green
topic: The Role of Hemoglobin in Oxygen Transport
grade: 9
subject: Science
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character: Prof. Red
topic: The Circulatory System and Its Function
grade: 9
subject: Science
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character: Ms. Yellow
topic: Gas Exchange in the Lungs and Tissues
grade: 9
subject: Science
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