character: Professor Green
topic: Sustainable Practices in Metallurgy
grade: 9
subject: Chemistry
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character: Dr. Jane Smith
topic: Recycling Metals and Environmental Impact
grade: 9
subject: Chemistry
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character: Mr. Robert Lee
topic: Green Technologies in Material Science
grade: 9
subject: Chemistry
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character: Ms. Emily Chen
topic: Innovative Approaches to Sustainable Mining
grade: 9
subject: Chemistry
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