character: Mr. Thompson
topic: Acid-Base Reactions in Environmental Science
grade: 9
subject: Chemistry
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character: Dr. Smith
topic: Impact of Acid Rain on Ecosystems
grade: 9
subject: Chemistry
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character: Ms. Garcia
topic: Buffer Solutions in Natural Waters
grade: 9
subject: Chemistry
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character: Mr. Patel
topic: Role of pH in Soil Chemistry
grade: 9
subject: Chemistry
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