The oysters are nucleated with a bead composed of mother-of-pearl and a small piece of mantle tissue. This bead becomes the nucleus of the pearl and is the reason akoya pearls are more often perfectly round.
Carbon definition, Chemistry. a widely distributed element that forms organic compounds in combination with hydrogen, oxygen, etc., and that occurs in a pure state as diamond and graphite, and in an impure state as charcoal.
A carbon dioxide molecule has one carbon atom and two oxygen atoms. The carbon means 1 carbon. The Di-oxide means 2 oxygen. Di (as in dos which is 2 in spanish) means 2. Oxideâ¦ means oxygen. This circuit is used in most electronic digital computers ever built & was invented in 1918 (patent GB148582).