character: Professor Green
topic: Chemical Reactions in Ecosystems
grade: 12
subject: Chemistry
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character: Dr. Blue
topic: The Role of Photosynthesis in Ecosystem Balance
grade: 12
subject: Chemistry
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character: Mr. White
topic: Impact of Soil Chemistry on Plant Growth
grade: 12
subject: Chemistry
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character: Ms. Red
topic: Biochemical Cycles and Their Environmental Impacts
grade: 12
subject: Chemistry
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