character: Professor Mark Smith
topic: Advanced Techniques in Water Treatment
grade: 12
subject: Chemistry
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character: Dr. Emily Johnson
topic: Chemical Processes in Water Purification
grade: 12
subject: Chemistry
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character: Professor David Lee
topic: Innovations in Wastewater Treatment Technologies
grade: 12
subject: Chemistry
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character: Dr. Sarah Thompson
topic: Environmental Impacts of Water Treatment Methods
grade: 12
subject: Chemistry
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