character: Eco Explorer
topic: The Role of Oxygen in Ecosystems and Respiration
grade: 10
subject: Science
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character: Biology Buddy
topic: Photosynthesis and the Oxygen Cycle
grade: 10
subject: Science
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character: Science Sleuth
topic: Cellular Respiration Processes
grade: 10
subject: Science
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character: Nature Navigator
topic: Impact of Oxygen Levels on Aquatic Life
grade: 10
subject: Science
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