character: Dr. Jane Smith
topic: Role of Public Health Officials in Preventing Waterborne Illnesses
grade: 12
subject: Chemistry
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character: Professor Mark Johnson
topic: Chemical Treatments for Safe Drinking Water
grade: 12
subject: Chemistry
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character: Dr. Emily White
topic: Impact of Water Quality on Public Health
grade: 12
subject: Chemistry
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character: Mr. Alex Brown
topic: Community Education on Waterborne Pathogens
grade: 12
subject: Chemistry
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