character: Professor John Miller
topic: Recycling Technologies and Innovations
grade: 9
subject: Science
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character: Dr. Emily Wright
topic: Sustainable Materials in Engineering
grade: 9
subject: Science
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character: Ms. Sarah Thompson
topic: Waste Management Strategies
grade: 9
subject: Science
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character: Mr. David Chen
topic: Innovations in Plastic Recycling
grade: 9
subject: Science
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