The concentration of Na+ is greater inside the cell, and the concentration of K+ is greater outside the cell.
The concentrations of Na+ and K+ are both greater outside the cell.
The concentrations of Na+ and K+ are both greater inside the cell.
The concentration of Na+ is greater outside the cell, and the concentration of K+ is greater inside the cell.
Answer:
The Continental Drift theory is a theory because there is no evidence to support it. Alfred Wegener developed the Continental Drift theory in the 1800's.