character: Professor Lisa Welchel
topic: Relationship Between pH Levels and Water Pollutants
grade: 12
subject: Chemistry
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character: Dr. James Carr
topic: Impact of pH on Aquatic Ecosystems
grade: 12
subject: Chemistry
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character: Ms. Emily Turner
topic: Effects of Acid Rain on Water Quality
grade: 12
subject: Chemistry
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character: Mr. David Reynolds
topic: Sources of Water Pollution and pH Variability
grade: 12
subject: Chemistry
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