Oxygen is produced from splitting a molecule

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

What is responsible for the uneven heating between the poles and the equator on any given day

What is the process by which biological parents pass traits such as hair type or eye color to their children