Water then moves from cell to cell through the root cortex by osmosisalong a concentration gradient; this means that each cell is hypertonic to the one before it. In the centre of the root the water enters the xylem vessels. Water may move by diffusionthrough the cell walls and intercellular spaces.
A carbon atom has 4 valence electrons
The condition is known as tardive dyskinesia.
The right answer is <span>Rudolf Virchow!
Hope that helped. :)</span>