Tell Me Why: A Healthy Body

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An award-winning unique video encyclopedia based on the book series by Arkady Leokum. This volume answers questions children ask about the human body. Included are questions such as: How does the body make blood cells? How much blood do we have in our bodies? What do veins do? Is all human blood the same? What vitamins do we need? What does salt do for the body? What is an addict? What are hallucinogenic drugs?