character: Ms. Emily Davis
topic: Impact of Poor Water Quality on Human Health
grade: 12
subject: Chemistry
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character: Dr. John Smith
topic: Chemical Contaminants in Water and Their Effects on Health
grade: 12
subject: Chemistry
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character: Prof. Sarah Johnson
topic: Environmental Chemistry: Water Pollution and Health Risks
grade: 12
subject: Chemistry
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character: Mr. James Lee
topic: Water Quality Assessment and Public Health Implications
grade: 12
subject: Chemistry
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