character: Sam the Scientist
topic: Differences Between Arteries and Veins
grade: 10
subject: Biology
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character: Sam the Scientist
topic: Circulatory System Overview
grade: 10
subject: Biology
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character: Sam the Scientist
topic: Blood Flow and Function
grade: 10
subject: Biology
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character: Sam the Scientist
topic: Heart Anatomy and Function
grade: 10
subject: Biology
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