Which of the following structures provides support and movement ? A. Heart and skin.
B. Nerves and brain
C. Lungs and spine.
D. Bones and muscles

The answer is C.

Explanation:

This is because you wouldn't be able to function without your lungs and spine. So therefore the answer would have to be "C".

D Bones and Muscles

Explanation:

The bones and muscles provide ,mobility to the body. The muscular and skeletal system both work together to support each other. Since both work together, this means they both play a large role in supporting the body and letting the body keep its posture.So yes D is correct because the bones support the muscle tissue and skin that will layer on top of it.

Hope this helps!

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

you need to have a picture of the atom that way we can answer it