The ocean hold 97 percent of earths water.
You need to look at the electronegativity and decide wheter the difference of both of the numbers are significant enough to form a polar bond
Description of a nerve signal
The nerve signal, or action potential, is a coordinated movement of sodium and potassium ions across the nerve cell membrane. Here's how it works: As we discussed, the inside of the cell is slightly negatively charged (resting membrane potential of -70 to -80 mV).
