character: Ms. Davis
topic: Gas Exchange and the Respiratory Process
grade: 9
subject: Biology
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character: Mr. Johnson
topic: The Anatomy of the Respiratory System
grade: 9
subject: Biology
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character: Dr. Rivera
topic: Mechanisms of Breathing
grade: 9
subject: Biology
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character: Mrs. Lee
topic: The Role of Hemoglobin in Oxygen Transport
grade: 9
subject: Biology
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