character: Dr. Sarah Anderson
topic: Effects of Pollutants on Marine Ecosystems
grade: 11
subject: Science
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character: Dr. Emily Chang
topic: Impact of Plastic Waste on Ocean Life
grade: 11
subject: Science
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character: Professor John Smith
topic: Acid Rain and Its Effects on Coastal Habitats
grade: 11
subject: Science
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character: Dr. Rachel Lee
topic: The Role of Heavy Metals in Marine Pollution
grade: 11
subject: Science
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