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Originally Posted by 19bonestock88
So, in laymans terms, sand? Silt? Powdered clay?
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Earth made from diatoms. Duh.
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Originally Posted by https://en.wikipedia.org/wiki/Diatom
Selections from Ernst Haeckel's 1904 Kunstformen der Natur (Art Forms of Nature),
showing pennate (left) and centric (right) frustules. |