character: Ms. Jessica Brown
topic: Pollution Sources and Their Chemical Significance
grade: 11
subject: Chemistry
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character: Mr. Alan Smith
topic: Air Pollutants and Their Impact on Health
grade: 11
subject: Chemistry
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character: Dr. Emily White
topic: Water Contamination Sources and Chemical Effects
grade: 11
subject: Chemistry
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character: Ms. Karen Johnson
topic: Soil Pollution: Causes and Chemical Consequences
grade: 11
subject: Chemistry
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