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Carbohydrates.jpg(800 × 450 pixels, file size: 251 KB, MIME type: image/jpeg)

Some organic compounds comprising hydrogen and oxygen in a two-to-one ratio, yesterday.

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current12:23, 15 October 2019Thumbnail for version as of 12:23, 15 October 2019800 × 450 (251 KB)Amwelladmin (talk | contribs)