character: Dr. Lopez
topic: Water Purification Methods and Their Environmental Impact
grade: 11
subject: Chemistry
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character: Dr. Amani
topic: Chemical Processes in Water Treatment
grade: 11
subject: Chemistry
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character: Mr. Zhang
topic: Sustainable Practices in Water Management
grade: 11
subject: Chemistry
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character: Ms. Patel
topic: The Role of Chemistry in Environmental Conservation
grade: 11
subject: Chemistry
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