character: Dr. Lee
topic: Environmental Chemistry and Water Quality
grade: 11
subject: Chemistry
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character: Professor Green
topic: Impact of Pollution on Water Sources
grade: 11
subject: Chemistry
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character: Ms. Rivers
topic: Water Treatment Processes and Technologies
grade: 11
subject: Chemistry
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character: Mr. Ocean
topic: Chemical Properties of Water in Environmental Studies
grade: 11
subject: Chemistry
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