character: Ms. Sarah Johnson
topic: Air Quality Monitoring Techniques
grade: 9
subject: Science
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character: Mr. Alex Thompson
topic: Types of Air Pollutants
grade: 9
subject: Science
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character: Dr. Emily Carter
topic: Impact of Air Quality on Health
grade: 9
subject: Science
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character: Ms. Laura Kim
topic: Environmental Science and Air Quality Management
grade: 9
subject: Science
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