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When babies are born, their bones are like rubber. Even if
a newborn baby knew how to stand up, his bones would not support
him. They would just bend. |
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As
babies get older, things change. Their bones become stronger
from calcium and other minerals in food. This is why a healthy
diet is very important, especially while bones are growing.
Eventually, bones become strong enough for the baby to stand
up. |
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Bones
are not solid. If they were, they would be as heavy as rocks. |
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Your
bones also manufacture blood cells and store useful minerals |
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Joints hold the bones together and allow
them to move. |
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Some
bones are joined by flexible parts, called joints. |
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The smallest bones are in your ear. |