What happens when molecules diffuse across the cell membrane? The molecules diffuse until all of them are outside the cell. The molecules move from areas of low concentration to high concentration. The molecules move from areas of high concentration to low concentration. The molecules diffuse until all of them are inside the cell.

The correct answer is from areas of high concentration to low concentration.

Explanation: Diffusion, by definition, is the process of molecules (any molecule) going down their concentration gradient (i.e. they are going from higher concentration to lower concentration). Hope that helped!

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.