Carbonic acid - I was retouching a print today of a dawn shot of a marble cliff in Kings Canyon, taken two weeks ago, where over 240 caves have now been identified. Most of this acid comes from decaying vegetation. The problem with the acidification in the oceans, due mostly to atmospheric CO2, is that it has the potential for super-additive increase. Those very microorganisms, corals, and mollusks which effectively trap carbon to create shells or exoskeletons, and over time have created limestone, are now having a very difficult time forming their calcareous shells or branches due to oceanic pH shift. It's gotten so bad that many of our West Coast oyster farms have had to import the early stage of their oysters, or raise them in controlled pH tanks until their tiny thin shells are thick enough to resist the acidic corrosion. Back when my wife and I were taking our honeymoon, we traveled to Kauai in a airline 3-seater next to a lady who was a Coca Cola executive. My wife asked her if she got her Coke for free. She responded that she never drank the stuff because every ingredient is shipped in Hazmat tank cars, esp the concentrated carbonic acid. Everybody knows what carbonized drinks do to teeth !
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