character: Dr. Mark Johnson
topic: Toxicology of Heavy Metals and Health Risks
grade: 11
subject: Chemistry
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character: Dr. Emily Carter
topic: Environmental Impact of Heavy Metals
grade: 11
subject: Chemistry
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character: Prof. Sarah Hughes
topic: Biological Effects of Mercury Exposure
grade: 11
subject: Chemistry
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character: Dr. Alan Smith
topic: Lead Poisoning: Symptoms and Prevention
grade: 11
subject: Chemistry
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