Multiple choice

Only ______ of Earth's water is fit for human consumption.

  1. 3%

  2. 10%

  3. 7%

  4. 15%

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

About 97% of Earth's water is saltwater in oceans. Only about 3% is freshwater, and even less of that is readily accessible for human use (most is locked in glaciers or groundwater). This makes 3% the approximately correct figure.