character: Ms. Angela Wright
topic: Analyzing Contaminants in Drinking Water
grade: 12
subject: Chemistry
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character: Dr. Emily Carter
topic: Methods for Water Quality Testing
grade: 12
subject: Chemistry
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character: Mr. John Smith
topic: Impact of Heavy Metals on Health
grade: 12
subject: Chemistry
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character: Ms. Sarah Lee
topic: Environmental Regulations for Water Safety
grade: 12
subject: Chemistry
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