What steps do you think could be taken to help generate jobs and help people and rise out property

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

Which of the following is a testable hypotheses?

What is the difference between a meteoroid and a meteor?