character: NASA
topic: Greenhouse Gases and Global Warming
grade: 11
subject: Chemistry
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character: IPCC
topic: Climate Change and Greenhouse Gas Emissions
grade: 11
subject: Chemistry
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character: NOAA
topic: Impact of Greenhouse Gases on Weather Patterns
grade: 11
subject: Chemistry
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character: EPA
topic: Regulations on Greenhouse Gas Emissions
grade: 11
subject: Chemistry
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