Book

Digestion And Excretion

What are villi? How do bacteria help the digestive system? Why is fiberimportant? The Human Machine asks the questions that young people wantanswered. Each chapter contains a different question so readers can developtheir knowledge. «

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(3/0)

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Author(s):

Louise A. Spilsbury, Louise Spillsbury, Louise Spilsbury, Richard Spilsbury

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ISBN

9780431192048

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