character: Ms. White
topic: Impact of Pollutants on Water Quality
grade: 11
subject: Chemistry
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character: Mr. Green
topic: Effects of Industrial Waste on Aquatic Life
grade: 11
subject: Chemistry
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character: Dr. Blue
topic: Chemical Properties of Common Water Pollutants
grade: 11
subject: Chemistry
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character: Ms. Yellow
topic: Water Treatment Methods and Their Effectiveness
grade: 11
subject: Chemistry
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