is a stimulant that excites the central nervous system, resulting in heightened arousal and activity levels.

Stimulants

Explanation:

Stimulants function by increasing the excitement on the central nervous system, thereby improving alertness and activity levels. When this occurs, the central nervous system passes the information to the brain and reacts there after.

1. seasonal

2. frictional unenployment

3. the number of the labor force multiplied by 100 and then subtract the number of unemployed.

4. 4%

5. an increase in prices

answer; night terrors;