character: Dr. Laura Green
topic: Chemical Pollution and Ecosystems
grade: 12
subject: Chemistry
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character: Dr. Emily Carter
topic: Impact of Heavy Metals on Aquatic Life
grade: 12
subject: Chemistry
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character: Professor Mark Thompson
topic: Effects of Pesticides on Biodiversity
grade: 12
subject: Chemistry
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character: Dr. Sarah Kim
topic: Acid Rain and Its Impact on Forest Ecosystems
grade: 12
subject: Chemistry
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