30%
30%
30%
the ice age.
10% of the world
20%
30%
Only high in the mountains and on glaciers does it remain snow covered.
Approximately 30% of the Earth's surface is covered by land, the remaining 70% of the surface is covered by water.
Over 70% of the Earth's surface is covered with water
55
Glaciation refers to climatic episode in which much of the Earth becomes covered with glaciers, reaches a peak in glacial coverage, and then ends with the retreat of glaciers.