character: Dr. Smith
topic: Chemical Principles in Water Purification
grade: 11
subject: Chemistry
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character: Dr. Jones
topic: The Role of pH in Water Treatment
grade: 11
subject: Chemistry
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character: Professor Lee
topic: Understanding Hydraulic Cycle and Water Quality
grade: 11
subject: Chemistry
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character: Ms. Garcia
topic: Chemical Reactions in Water Filtration Systems
grade: 11
subject: Chemistry
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