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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
Students Responding Correctly
Group Correct Total Percent
Overall 1045 1456 72%
Grades
  6–8 689 945 73%
  9–12 356 511 70%
Gender
  Male48471268%
  Female54572176%
Primary Language
  English944130672%
  Other7210271%

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