Which of the following should be the main source of food energy?
a. carbohydrates
b. proteins
c. fats
d. minerals

The characteristic of stress responses that refers to the degree or extent of the behavior is a. intensity. b. frequency. c. duration. d. stress.

Arm circles are often effective dynamic stretches for swimmers because they

When children are young and go to the doctor, the doctor will give them booster shots. this re-exposes the children to a dead portion of a disease to them build immunity.