Protein is a fat soluble vitamin
The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person's body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves.
The answer to your question is Letter C <-- ANSWER
Steroid is a molecule made up of four carbon rings with other atoms bonded to those rings.
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Answer:
72, because you just multiply by 2