character: Mr. Lee
topic: Applications of Spectroscopy in Environmental Science
grade: 9
subject: Chemistry
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character: Dr. Smith
topic: Understanding Light and Its Interaction with Matter
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: The Role of Chemistry in Environmental Monitoring
grade: 9
subject: Chemistry
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character: Mr. Tran
topic: Techniques in Environmental Chemistry
grade: 9
subject: Chemistry
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