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Home Q & A Board Science-Related Homework Help Psychology Developmental Psychology
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8 years ago
The body’s muscle fibers
a.   are mostly absent at birth and do not appear in great numbers until middle childhood.
b.   become longer and thicker during childhood.
c.   become shorter and thinner during childhood.
d.   are fused together at birth, but gradually separate.
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Children and Their Development

Children and Their Development


Edition: 3rd
Authors:
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8 years ago
Thank you for your help.
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8 years ago
You're welcome.

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