character: Ms. Sarah Johnson
topic: Impact of acid rain on aquatic ecosystems
grade: 10
subject: Biology
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character: John Smith
topic: Effects of pollution on freshwater biomes
grade: 10
subject: Biology
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character: Emily Carter
topic: The role of pH in aquatic life sustainability
grade: 10
subject: Biology
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character: David Lee
topic: Acidification and its impact on fish populations
grade: 10
subject: Biology
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