jenniferalston59
jenniferalston59
26-09-2018
Health
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why are bones hard and muscles soft
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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
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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