character: Dr. Smith
topic: Methods of Water Treatment
grade: 12
subject: Chemistry
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character: Dr. Jane
topic: Chemical Processes in Water Purification
grade: 12
subject: Chemistry
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character: Professor Lee
topic: Filtration Techniques in Chemistry
grade: 12
subject: Chemistry
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character: Ms. Brown
topic: Impact of Water Quality on Chemical Reactions
grade: 12
subject: Chemistry
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