2 Points
Which of the following correctly compares the oxygen isotopes 16O and 18O?
O
A. 16Ohas 8 neutrons, whereas 18Ohas 10 neutrons.
B. 16Ohas 16 neutrons, whereas 18Ohas 18 neutrons.
C. 16Ohas 16 protons, whereas 18Ohas 18 protons.
O
D. 16O has 8 protons, whereas 18O has 10 protons.

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