jenniferalston59
jenniferalston59 jenniferalston59
  • 26-09-2018
  • Health
contestada

why are bones hard and muscles soft

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bellastampa
bellastampa bellastampa
  • 26-09-2018

Bones are hard because they are made up of bone marrow and muscles are soft because they are muscles

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SeijiOzawa
SeijiOzawa SeijiOzawa
  • 26-09-2018
Bones are hard because their made out of bone marrow, and muscles are soft because their made out of muscle tissue
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