character: Ms. Rachel Green
topic: Waterborne Diseases
grade: 12
subject: Chemistry
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character: Ms. Rachel Green
topic: Chemical Contaminants in Water
grade: 12
subject: Chemistry
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character: Environmental Scientist
topic: Impact of Waterborne Diseases on Human Health
grade: 12
subject: Chemistry
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character: Public Health Official
topic: Prevention of Waterborne Illnesses
grade: 12
subject: Chemistry
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