character: Mr. Alex Brown
topic: Community Education on Waterborne Pathogens
grade: 12
subject: Chemistry
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character: Dr. Emily Chen
topic: Chemical Properties of Waterborne Pathogens
grade: 12
subject: Chemistry
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character: Ms. Laura Green
topic: Impact of Water Quality on Public Health
grade: 12
subject: Chemistry
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character: Mr. John Smith
topic: Preventative Measures Against Waterborne Diseases
grade: 12
subject: Chemistry
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