character: Mrs. Brown
topic: Pathophysiological Changes in Respiratory Diseases
grade: 9
subject: Science
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character: Mr. Smith
topic: Introduction to the Respiratory System
grade: 9
subject: Science
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character: Dr. Jones
topic: Effects of Air Pollution on Lung Health
grade: 9
subject: Science
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character: Ms. Taylor
topic: Common Respiratory Disorders and Their Symptoms
grade: 9
subject: Science
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