The role of convection currents in plate movement

The transport tubes for food coming down the plants are called?

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

If your blood becomes too concentrated with iona, what will happen to the red blood cells