character: Environmental Chemist
topic: Understanding pH levels in aquatic ecosystems
grade: 12
subject: Chemistry
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character: Ecology Student
topic: Impact of pH on aquatic life
grade: 12
subject: Chemistry
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character: Chemistry Instructor
topic: Laboratory techniques for monitoring pH in natural water sources
grade: 12
subject: Chemistry
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character: Environmental Scientist
topic: pH level changes due to pollution and natural processes
grade: 12
subject: Chemistry
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