April 20, 2009: Beach Sand
Discover has a series of pictures of beach sand.
The variation in shape and color are amazing by themselves, but Discover also describes how the different grains were created, where and what from.
I was not surprised that some sand comes from rock, but some comes from sea critters and some from pollution.
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The descent of man ~ Nixon, Friedman, Reagan, Trump.
Last edited by xoxoxoBruce; 04-20-2009 at 07:03 AM.
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