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Why do babies have more bones than adults?

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This week a TPL Kids visitor wonders why babies have more bones than adults.

An article in BBC Science explains it best: The skeleton of a newborn baby is made up of more than 300 parts, most of which are made of cartilage. Over time, most of this cartilage turns into bone, in a process called ossification. As the baby grows, some of its bones fuse together to form bigger bones. By adulthood, your skeleton contains just 206 bones.

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