character: Mr. Thompson
topic: Differences Between Diffusion and Active Transport
grade: 9
subject: Science
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character: Dr. Smith
topic: Mechanisms of Gas Exchange in the Lungs
grade: 9
subject: Science
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character: Ms. Jones
topic: Importance of Surface Area in Gas Exchange
grade: 9
subject: Science
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character: Professor Lee
topic: Factors Affecting Diffusion Rates in Human Respiratory System
grade: 9
subject: Science
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