character: Dr. Eco
topic: Environmental Impact of Metal Extraction
grade: 9
subject: Chemistry
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character: Professor Green
topic: Sustainable Practices in Metallurgy
grade: 9
subject: Chemistry
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character: Ms. Gold
topic: Recycling Metals and Environmental Benefits
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Chemistry of Metal Extraction and Pollution
grade: 9
subject: Chemistry
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