When the linnaean system of classification was first develop in the early 1700s, it had 3 kingdoms by the mid-1900s , it had five kingdoms . which of the following best explains why the number of kingdoms increased

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