How do the muscles in the human body with movement?
a.
they squeeze the bones.
b.
they cause bones to bend.
c.
they push bones apart through ligaments.
d.
muscles contract and thus pull on bones to cause movement.
my guess is d ps idk what subject this is

in situ hybridization has been widely used for research applications, including clinical cytogenetics, gene mapping, tumor biology and studies of chromosome evolution.

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