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It is assumed for many years that to absorb the carbon dioxide dissolved in the oceans was the microscopic marine plankton that turns it into calcium carbonate to form their protective shells, but a new study has revealed that also the digestive system of fish helps to adjust the acidity of the sea life, keeping it in balance, producing crystals of calcium carbonate in the intestine which then would be expelled, and in this way would also absorbed much of the excess CO2 produced by man and then ends to increase the acidity of the seas. Another phenomenon that scientists are monitoring (essential for the health of the oceans) is the so-called "vertical ventilation" which uses a mechanism of flow of water stirring in depth to absorb the carbon dioxide dissolved in the surface, but it seems that the global warming could hinder this natural replacement.

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Telephone: +39 338 1809310 Date: 17/01/2009 article n°: 877 _____________________________________________________________________________________________________