character: Emily Chen
topic: Comparative Study of Emission Levels from Different Fuels
grade: 9
subject: Science
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character: Jessica Lee
topic: Impact of Renewable Fuels on Air Quality
grade: 9
subject: Science
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character: Michael Wong
topic: Emission Comparisons: Diesel vs. Gasoline
grade: 9
subject: Science
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character: Samantha Patel
topic: The Role of Biofuels in Reducing Carbon Emissions
grade: 9
subject: Science
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