character: Dr. Emily Chen
topic: Environmental Impact of Metal Recycling
grade: 12
subject: Chemistry
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character: Professor John Smith
topic: Sustainable Practices in Metallurgy
grade: 12
subject: Chemistry
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character: Dr. Maria Lopez
topic: Chemical Processes in Recycling Aluminum
grade: 12
subject: Chemistry
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character: Mr. David Green
topic: Ecological Benefits of Copper Recycling
grade: 12
subject: Chemistry
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