C = Colour: Moles that includes two to a few unique shades of brown need to be looked at a little suspiciously. Moles colored blue, gray, crimson, black or white also could signal attainable melanoma. A mole of C-12 by definition weighs precisely 12 g and Avogadro's variety is decided https://dean94id5.iyublog.com/26493817/a-review-of-mole