Item WC007001: The humidity of air can increase and it can decrease.
Which of the following statements is TRUE about changes to the humidity of air at a particular place over time?
- The humidity of air can increase, but it cannot decrease.
 - The humidity of air can decrease, but it cannot increase.
 - The humidity of air can increase, and it can decrease.
 - The humidity of air cannot change.
 
- Distribution of Responses
 
																- Students Responding Correctly
 
| Group | Correct | Total | Percent | 
|---|---|---|---|
| Overall | 1045 | 1456 | 72% | 
| Grades | |||
| 6–8 | 689 | 945 | 73% | 
| 9–12 | 356 | 511 | 70% | 
| Gender | |||
| Male | 484 | 712 | 68% | 
| Female | 545 | 721 | 76% | 
| Primary Language | |||
| English | 944 | 1306 | 72% | 
| Other | 72 | 102 | 71% | 

