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Pastimes : Evolution - Moderated
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From: 2MAR$10/29/2014 6:48:24 PM
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Lance Bredvold

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Natural Selection

Water is indispensible for life as we know it, but how much water does Earth actually contain?

"In this illustration, the blue ball represents the volume of all... the water on earth, relative to the size of the earth. The tiny speck to the right of the blue ball represents Earth’s fresh water.

If Earth was the size of a basketball, all of its water would fit into a ping pong ball."

Source: http://tinyurl.com/b7hqmbl

Credit: David Gallo/WHOI
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