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A comment on Perspective: All of Earth's Water in a Single Sphere. Parent comment

Re:Perspective: All of Earth's Water in a Single Sphere by wpietri on Sunday May 06, 2012 @10:42AM (#3935218)
because the troposphere + upper crust is a fairly thin shell, so doesn't take up a lot of volume when visualized as a solid sphere next to the earth

That is the useful intuition. Most people don't have it.

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