One example of an infectious disease is the common cold.

The most commonly abused prescription drugs include

A) pain relievers.
B) MDMA.
C) alcohol.
D) cough suppressants.

What is the legal blood alcohol limit for persons over 21 years old?

A) 0.10%
B) 0.08%
C) 0.02%
D) 0.05%

Positive energy balance means that you are taking in more calories than your body is using.