character: Professor Samuel Wells
topic: Ecotoxicology and Its Importance in Environmental Chemistry
grade: 12
subject: Chemistry
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character: Dr. Jane Smith
topic: Impact of Pollutants on Marine Life
grade: 12
subject: Chemistry
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character: Mr. John Doe
topic: Toxicology in Agricultural Practices
grade: 12
subject: Chemistry
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character: Dr. Emily Zhang
topic: Role of Chemistry in Environmental Remediation
grade: 12
subject: Chemistry
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