character: Ms. Laura Kim
topic: Understanding Atmospheric Gases and Their Functions
grade: 9
subject: Physics
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character: Mr. John Smith
topic: The Role of Greenhouse Gases in Climate Change
grade: 9
subject: Physics
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character: Dr. Emily Johnson
topic: The Composition of Earth's Atmosphere
grade: 9
subject: Physics
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character: Ms. Sarah Thompson
topic: The Function of Oxygen in Respiration
grade: 9
subject: Physics
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