Why do skeletal muscles work in pairs? A One tightens and the other relaxes to make the bones move.

B Multiple muscles have to tighten to make joints move.

C They cancel each other out.

D Bones are resistant to movement.

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blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.