character: Cynthia
topic: Chemical Pollutants and Their Effects on Water Sources
grade: 12
subject: Chemistry
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character: Sarah
topic: The Impact of Industrial Waste on Aquatic Ecosystems
grade: 12
subject: Chemistry
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character: Michael
topic: Heavy Metals in Water: Sources and Solutions
grade: 12
subject: Chemistry
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character: Jason
topic: Nutrient Runoff and Its Consequences for Water Quality
grade: 12
subject: Chemistry
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