Q: The bonding of oxygen to red blood cells is important to the body because it enables the body to

OPTIONS:
- absorb nutrients from food.
- make energy from light.
- maintain a constant temperature.
- perform aerobic respiration in cells.
A: perform aerobic respiration in cells.
Q: Air in the atmosphere is heated unevenly by the sun, causing

OPTIONS:
- wind patterns.
- cloud formation.
- volcanic activity.
- water condensation.
A: wind patterns.
Q: Which of the following devices relies on electromagnetic radiation in the radio wave region of the spectrum for operation?

OPTIONS:
- sun tanning lamp
- electric light bulb
- cellular telephone
- electric toaster
A: cellular telephone
Q: Frank needs to move a box by sliding it across the floor. Which two factors will most strongly affect how hard Frank needs to push the box?

OPTIONS:
- The density of the box material and the hardness of the floor
- The thickness of the box material and the hardness of the floor
- The total mass of the box and the friction between the box and the floor
- The total height of the box and the distance between his hands and the floor
A:
The total mass of the box and the friction between the box and the floor