Which evidence originally supported hess’s idea of seafloor spreading in 1968

Which statement describe events that occur during interphase?

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 two criteria must be met before scientist can use radiocarbon dating? explain your answer