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Biology, 02.09.2019 09:30 bbrooks9827

Muscles in animals are often found in pairs, because
a. muscles can only pull.
b. muscles need to be able to both push and pull.
c. muscles can only push.
d. muscles can only produce a force as they relax.

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Muscles in animals are often found in pairs, because
a. muscles can only pull.
b. muscle...
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