Which of the following statements is TRUE about changes to the humidity of air at a particular place over time?

  1. The humidity of air can increase, but it cannot decrease.
  2. The humidity of air can decrease, but it cannot increase.
  3. The humidity of air can increase, and it can decrease.
  4. The humidity of air cannot change.

Distribution of Responses

Chart showing distrubtion of responses for Item WC007001

Percent of students responding correctly

Overall72%
Grades 6–873%
Grades 9–1270%
Male68%
Female76%
Primary Language is English72%
Primary Language is not English71%

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