Carbonic anhydrase 1 is an enzyme that in humans is encoded by the CA1 gene. Carbonic anhydrases are a large family of zinc metalloenzymes that catalyze the reversible hydration of carbon dioxide.
It is becoming more common that the latte macchiato will have a layer of milk foam on the top of the drink as well. A latte is steamed milk, espresso, and a 1/4 inch of foam ontop. It is prepared in this order: flavored syrup (if applicable), espresso, steamed milk, topped with 1/4 inch of foam.
The difference is in the octave.The octave is constructed of two quatrains. 1  The Italian has a rhyming scheme of, a.b.b.a....a.b.b.a. 2  The Sicilian has a rhyming scheme of, a.b.b.a....c.d.d.c.