Which of the following is the correct definition of vitamins? a) The body's primary source of energy.
b) The building block of proteins.
c) Nutrients that help the body use proteins. carbohydrates, and fats.
d) Chemical substances in food that have specific functions in the body, such as providing energy and helping to fight off infections.

This is one popular brand of exercise machine

When do people generally experience rapid growth for a second time? a. between the ages of 3 and 9 b. between the ages of 9 and 12 c. between the ages of 13 and 20 d. between the ages of 25 and 29 which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.

Grain products are a good source of .