character: Mr. Johnson
topic: Using Spectroscopy to Monitor Soil Contaminants
grade: 9
subject: Chemistry
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character: Dr. Smith
topic: Analyzing Soil Quality through Chemical Tests
grade: 9
subject: Chemistry
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character: Ms. Lee
topic: Impact of Heavy Metals in Soil: A Chemical Perspective
grade: 9
subject: Chemistry
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character: Mr. Thompson
topic: Introduction to Environmental Chemistry and Soil Analysis
grade: 9
subject: Chemistry
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