character: Dr. Alan Green
topic: Chemical Contaminants in Water and Their Health Effects
grade: 12
subject: Chemistry
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character: Environmental Scientist
topic: Impact of Heavy Metals on Human Health
grade: 12
subject: Chemistry
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character: Public Health Official
topic: Water Quality Standards and Regulations
grade: 12
subject: Chemistry
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character: Toxicologist
topic: Chronic Exposure to Chemicals in Drinking Water
grade: 12
subject: Chemistry
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