character: Professor John Green
topic: The Chemistry of Metals and Their Recycling
grade: 9
subject: Chemistry
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character: Dr. Jane Smith
topic: Metallurgy and Environmental Impact
grade: 9
subject: Chemistry
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character: Professor Alice Johnson
topic: The Role of Metals in Everyday Life
grade: 9
subject: Chemistry
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character: Dr. Mike Anderson
topic: Sustainable Practices in Metal Recycling
grade: 9
subject: Chemistry
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