All the processes that form mountains ranges are know as?

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

Why do mountaineers become breathless as they reach high altitudes

Where does the citric acid cycle take place in eukaryotic cellular respiration?