What do X and Y chromosomes affect? O A. Whether someone is a female or male O O O B. How many parents a person has. C. The shape of a person's thumb. O D. Whether earlobes are attached.​

What are the seven economic and social goals?

What percentage of light hits earth's surface directly?

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