character: Capillary Kid
topic: Gas Exchange in Capillaries
grade: 10
subject: Biology
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character: Oxygen Molecule
topic: Diffusion in Blood Vessels
grade: 10
subject: Biology
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character: Carbon Dioxide Bandit
topic: Removal of Waste Gases
grade: 10
subject: Biology
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character: Red Blood Cell Hero
topic: Transporting Gases in the Circulatory System
grade: 10
subject: Biology
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