When we say "muscle" - the ones that show how strong you are, we are referring to what kind of muscles?
cardiac

smooth

skeletal

Skeletal, its because smooth are the involuntary ones in like the back of your throat and cardiac are the ones in your heart.

Explanation:it's skeletal muscle

That's it

Hope this helps u

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide