character: Ms. Johnson
topic: Environmental Chemistry and Acid Rain
grade: 9
subject: Chemistry
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character: Dr. Smith
topic: The Impact of Acid Rain on Ecosystems
grade: 9
subject: Chemistry
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character: Mr. Lee
topic: Chemical Reactions and Pollutants in the Atmosphere
grade: 9
subject: Chemistry
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character: Mrs. Clark
topic: Acid Rain: Causes and Solutions
grade: 9
subject: Chemistry
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