character: Oxygen Owl
topic: How Oxygen is Carried in the Blood
grade: 6
subject: Health Education
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character: Red Blood Cell
topic: The Role of Hemoglobin in Oxygen Transport
grade: 6
subject: Health Education
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character: Lung Alveoli
topic: Gas Exchange in the Lungs
grade: 6
subject: Health Education
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character: Heart Pump
topic: Circulatory System and Blood Flow
grade: 6
subject: Health Education
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