• Beneath the surface
     Help
  • How many percent of the Earth is covered with water?
    70%
  • For how long can a human survive without water?
    A week
  • Roughly 97% of the water on Earth is...?
    salt water
  • Unlock this slideshow and over 4 million more with Baamboozle+
    Try slideshows
  • Your experience on this site will be improved by allowing cookies.