Epicenter-The point on the Earth's surface located directly above the focus<span> of an</span>earthquake<span>. </span>Focus<span>-The location where the </span>earthquake<span> begins. The ground ruptures at this spot, then seismic waves radiate outward in all directions.</span>
It's the sodium ion.
When a neural impulse is fired in both neurons, it is always cause by an excited electron in one neuron moving to the other neuron to destabilize the balance of ions trying to keep them at equilibrium. This action either depolarizes or hyper-polarizes the membrane. If it does, then sodium ions--the key deficient ones--can flow into that region of low charge and maintain that state of low charge, keeping the cell membrane stable.
The only bone of the body that does not articulate directly with any other bone is the Hyoid Bone.
Answer:
D................... or B sorry
Osmosis<span> is the phenomenon of the movement of Solvent molecules from lower solute conc. to higher solute conc. through a semi-permeable membrane to make solute conc. equal on both sides.</span>