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When an animal runs along the ground by flexing some of its muscles, what causes its muscles to contract? A. hormonal signals B. light signals C. heat impulses D. electrical imp…

When an animal runs along the ground by flexing some of its muscles, what causes its muscles to contract? A. hormonal signals B. light signals C. heat impulses D. electrical imp…
asked 96.5k views
4 votes
When an animal runs along the ground by flexing some of its muscles, what causes its muscles to contract?

A.
hormonal signals
B.
light signals
C.
heat impulses
D.
electrical impulses

asked
User GrandOpener
by
8.8k points

2 Answers

3 votes
Letter A for sure! Hope I helped.
answered
User Bsalex
by
7.8k points
4 votes
its D, i looked it up
answered
User Santosh B
by
8.6k points
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