character: Carl Sagan
topic: The Role of Greenhouse Gases in Climate
grade: 11
subject: Chemistry
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character: Bill Nye
topic: Impact of Greenhouse Gases on Global Warming
grade: 11
subject: Chemistry
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character: David Attenborough
topic: Climate Change and Environmental Effects
grade: 11
subject: Chemistry
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character: Al Gore
topic: The Science of Climate Change and Gases
grade: 11
subject: Chemistry
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