character: Ms. Carter
topic: Effects of Acid Rain on Aquatic Life
grade: 9
subject: Chemistry
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character: Dr. Thompson
topic: Acid Rain: Causes and Consequences
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: pH Levels and Freshwater Ecosystems
grade: 9
subject: Chemistry
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character: Ms. Lee
topic: Impact of Pollutants on Marine Biodiversity
grade: 9
subject: Chemistry
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