character: Environmental Policy Maker
topic: Regulations on Hydrocarbon Use
grade: 11
subject: Chemistry
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character: Government Official
topic: Air Quality Improvement Strategies
grade: 11
subject: Chemistry
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character: Environmental Scientist
topic: Impact of Hydrocarbons on Air Quality
grade: 11
subject: Chemistry
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character: Chemistry Educator
topic: Chemical Reactions and Regulations on Emissions
grade: 11
subject: Chemistry
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