character: Dr. Emily Carter
topic: The Effects of pH Levels on Freshwater Ecosystems
grade: 12
subject: Chemistry
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character: Professor James Liu
topic: Acid Rain and Its Impact on Aquatic Biodiversity
grade: 12
subject: Chemistry
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character: Researcher Sarah Patel
topic: pH Variations in Coastal Waters and Marine Life
grade: 12
subject: Chemistry
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character: Ecologist Michael Chen
topic: The Role of pH in Aquatic Food Chains
grade: 12
subject: Chemistry
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