Very short answer question: What provides rigid surface for attachment of muscles?
Answer
The skeleton is a hard and internal (endoskeleton) or external (exoskeleton) surface of an organism which provides the attachment of the muscle and allows movement of these muscles.
For a certain value of \( c\),\( \underset{x\xrightarrow{} -\infty }{lim}\left[({x}^{5}+7{x}^{4}+2{)}^{c}-x\right]\) , is finite and non zero and has the value equal to l. Find the value of \( (l-2c)\).