character: Dr. Emily Carter
topic: The Effects of pH Levels on Freshwater Ecosystems
grade: 12
subject: Chemistry
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character: Dr. Andrew Miller
topic: The Role of Nutrient Balance in Aquatic Systems
grade: 12
subject: Chemistry
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character: Dr. Sarah Lee
topic: Impact of Acid Rain on Freshwater Habitats
grade: 12
subject: Chemistry
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character: Dr. Kevin Brown
topic: Chemical Composition of Freshwater and its Ecological Consequences
grade: 12
subject: Chemistry
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