<span>The nucleus is located at the center of an atom. It's very dense - almost all of the mass of an atom is located in the nucleus - and is made up of protons and neutrons. </span>
Answer:
A
Explanation:
This showed that at one point all continents were joined
The vacuole i believe is the answer
Answer:
student 1
Explanation:
The smooth muscles contract and fatigue slowly but are not striated and are innervated by involuntary nervous system. The cardiac muscles are uninucleate and striated. The skeletal muscles are innervated by the voluntary nervous system hence concerned with voluntary movement.
