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14 November, 05:41

Why do capillaries need to be thin walled?

A. so only a few nutrients can pass through

B. so only a small amount of blood can flow through

C. so they can go through the small spaces within the body

D. so the exchange of gases and nutrients can happen

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  1. 14 November, 07:28
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    D. so the exchange of gases and nutrients can happen
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