Search notes:

Wassermenge

Wäre die Erde eine vollkommene Kugel, würde das Wasser der Erde sie 2,72 Km tief bedecken. (https://www.quora.com/If-the-earth-were-a-perfect-sphere-no-mountains-valleys-etc-how-deep-would-the-water-on-top-be, https://www.reddit.com/r/answers/comments/23hiun/if_all_the_land_on_earth_were_perfectly_level_how)

Erde ist aber uneben: 71% Meer, druchschnittliche Tiefe 3682 m (http://www.livescience.com/27551-our-amazing-planet-top-to-bottom-mountaintop-to-ocean-trench-infographic.html)

Die durschnittliche Höhe des Festlandes beträgt ca 840 Meter.

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