character: Traffic Engineer
topic: Role of Vehicles in Nitrogen Oxide Emissions
grade: 9
subject: Chemistry
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character: Environmental Scientist
topic: Impact of Vehicle Emissions on Air Quality
grade: 9
subject: Chemistry
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character: Automobile Engineer
topic: Advancements in Vehicle Technology to Reduce Emissions
grade: 9
subject: Chemistry
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character: Urban Planner
topic: Strategies for Reducing Traffic and Emissions in Urban Areas
grade: 9
subject: Chemistry
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