character: Dr. Sarah Johnson
topic: Chemical Treatments for Water Purification
grade: 12
subject: Chemistry
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character: Dr. Emily Thompson
topic: The Role of Algae in Water Filtration
grade: 12
subject: Chemistry
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character: Prof. Mark Lewis
topic: Advanced Oxidation Processes in Environmental Chemistry
grade: 12
subject: Chemistry
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character: Dr. Alan Wright
topic: Comparative Analysis of Water Purification Methods
grade: 12
subject: Chemistry
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