character: John Green
topic: Crash Course Chemistry: Acid Rain
grade: 11
subject: Chemistry
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character: Hank Green
topic: Impact of Acid Rain on Ecosystems
grade: 11
subject: Chemistry
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character: John Green
topic: Chemical Reactions and Acid Rain
grade: 11
subject: Chemistry
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character: Hank Green
topic: Solutions to Acid Rain
grade: 11
subject: Chemistry
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