Ahuman adult has approximately 37 trillion (3.7 x 1013) cells in their body. each cell has roughly 6.5 picograms (6.5 x 10-12 grams) of dna. how much dna (in grams) is in an adult human's body? (show your work)

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

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