character: Professor Johnson
topic: Impact of Pollution on Marine Ecosystems
grade: 11
subject: Chemistry
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character: Dr. Emily Carter
topic: Chemical Composition of Ocean Water and its Relation to Pollution
grade: 11
subject: Chemistry
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character: Mr. Alex Reed
topic: The Role of Chemists in Mitigating Ocean Pollution
grade: 11
subject: Chemistry
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character: Ms. Sarah Thompson
topic: Effects of Heavy Metals on Marine Life
grade: 11
subject: Chemistry
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