character: Dr. Emily Carter
topic: Impact of Water Quality on Aquatic Life
grade: 12
subject: Chemistry
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character: Dr. Jane Smith
topic: Chemical Pollutants and Marine Ecosystems
grade: 12
subject: Chemistry
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character: Professor Alan Green
topic: Eutrophication and Its Effects on Freshwater Species
grade: 12
subject: Chemistry
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character: Dr. Sarah Johnson
topic: Acid Rain and Its Impact on Aquatic Habitats
grade: 12
subject: Chemistry
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