Before the cells in a person's body can use the food that the person eats, the food must be a. chemically broken down into sugar. b. chemically changed into heat. c. physically changed into a solid. d. physically heated to 100°c.

The mini-refrigerator fire was most likely caused by what type of wiring?

Which lists the organs in the correct order as food passes from the mouth to anus?

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.