character: Ms. Laura Green
topic: Impact of Water Quality on Public Health
grade: 12
subject: Chemistry
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character: Dr. James Porter
topic: Chemical Contaminants in Drinking Water
grade: 12
subject: Chemistry
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character: Prof. Emily Carter
topic: Water Pollution and Human Health Risks
grade: 12
subject: Chemistry
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character: Mr. Robert Hayes
topic: The Chemistry of Water Treatment Processes
grade: 12
subject: Chemistry
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