character: Dr. Jane Smith
topic: Impact of Climate Change on Marine Ecosystems
subject: Geography
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character: Dr. John Doe
topic: Effects of Global Warming on Coral Reefs
subject: Geography
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character: Dr. Emily Johnson
topic: Ocean Acidification and Its Impact on Marine Life
subject: Geography
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character: Dr. Mark Stevens
topic: Sea Level Rise and Coastal Ecosystems
subject: Geography
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