character: Professor Lee
topic: Chemical Composition of Acid Rain
grade: 11
subject: Chemistry
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character: Dr. Smith
topic: Effects of Acid Rain on Ecosystems
grade: 11
subject: Chemistry
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character: Ms. Johnson
topic: Sources of Air Pollution Leading to Acid Rain
grade: 11
subject: Chemistry
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character: Mr. Taylor
topic: pH Scale and Acid Rain Measurement
grade: 11
subject: Chemistry
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