abigailreagan abigailreagan

09-05-2018
Biology

contestada

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

Respuesta :

softluhs softluhs

09-05-2018

Letter A for sure! Hope I helped.

Answer Link

Kayla574 Kayla574

09-05-2018

its D, i looked it up

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