What Is Sand Made Of? - Science ABC
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Sand is made of rocks eroded by rivers, the skeletons and shells of invertebrates, as well as calcium carbonate from parrotfish poop!
No one pays attention to sand. Sure, we go to the beach and use the sand to make castles, and or as a backdrop to fuel our Instagram with summer time scenes, but how often do we really think about it? From far away, sand looks like nothing more than a golden expanse of land meeting the sea.
However, if you take out a microscope and look through its lens to peer at the sand, a whole new world emerges.
The simple question of ‘what is sand made of?’ is actually quite fascinating… the answers involving time travel, fish poop, and pink skeletons!
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