Multiple choice general knowledge science & technology

What fraction of the Earth's land surface is desert?

  1. 1/5

  2. 1/4

  3. 1/3

  4. 1/2
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Approximately one-fifth (about 20%) of Earth's land surface is classified as desert, defined by very low precipitation (less than 250mm annually). This includes both hot deserts like the Sahara and cold deserts like Antarctica. One-quarter, one-third, or one-half would overestimate desert coverage.

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