character: Mr. John Davis
topic: Environmental Impact of Water Treatment Processes
grade: 12
subject: Chemistry
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character: Ms. Sarah Thompson
topic: Chemical Principles in Water Purification
grade: 12
subject: Chemistry
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character: Dr. Emily Johnson
topic: Sustainability in Water Treatment Technologies
grade: 12
subject: Chemistry
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character: Mr. Alan Smith
topic: Chemical Reactions in Water Quality Management
grade: 12
subject: Chemistry
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