How much of world's surface is covered by water? (1) 55% (2) 70% (3) 80% (4) 25%

How much of world's surface is covered by water? (1) 55% (2) 70% (3) 80% (4) 25%
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(2) 70% Explanation: Water makes up 70.8% of the Earth's surface, while the other 29% consists of continents and Islands. To break the numbers down, 96.5% of all the Earth's water is contained within the oceans as salt water, while the remaining 3.5% is freshwater lakes and frozen water locked up in glaciers and the polar ice caps.
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