T. J is now receiving 35% oxygen via a Venturi-mask. Explain how the venturi-mask works and why it is a preferred flow system for COPD patients. Should T. J request to have his oxygen flow turned up do to increase shortness of breath, how would you respond? Why?

Generally travels west to east but often shifts to north and south

Cell division is important to single celled organisms because it allows the cells to reproduce. through cell division, cells make exact copies of themselves. when single celled organisms go through cell division, they make exact copies of themselves which is how they reproduce.