character: Dr. Sarah Lopez
topic: Innovations in Water Treatment
grade: 11
subject: Chemistry
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character: Dr. Emily Chen
topic: Advanced Filtration Techniques
grade: 11
subject: Chemistry
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character: Professor John Smith
topic: Chemical Methods in Wastewater Management
grade: 11
subject: Chemistry
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character: Dr. Maria Gomez
topic: Sustainable Solutions for Clean Water
grade: 11
subject: Chemistry
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