character: Dr. Emily Johnson
topic: The importance of primary producers in ocean nutrient cycles
grade: 12
subject: Biology
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character: Dr. Maria Gonzalez
topic: The role of phytoplankton in marine ecosystems
grade: 12
subject: Biology
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character: Dr. Alan Smith
topic: Impact of ocean acidification on primary production
grade: 12
subject: Biology
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character: Dr. Sarah Lee
topic: Nutrient cycling and food webs in coastal environments
grade: 12
subject: Biology
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