As CO2 increases, the ocean will store more heat and hold less carbon, causing currents to slow and the ocean will become less effective at moving carbon in the atmosphere. Some biological life forms, such as microbes, use carbon for photosynthesis just as plants do on earth. When there is an increase in CO2, the presence of carbon in the ocean begins to decrease. And the acidity in the water begins to increase, which will cause a decrease in the availability of calcium carbonate that the shells and exoskeletons of small species of marine life need. Carbonate concentration has decreased by 16% and our economy and health are tied to organisms that depend on carbonate concentration. This could in turn impact businesses as some marine life depends on carbon concentration by killing something small like shrimp or krill or something else that other fish feed on, it could cause a disturbance in the food chain thus killing more fish and ultimately influencing businesses and people's lives. In fact the problem is so urgent that Cheryl A. Logan, writing on behalf of the American Institute of Biological Sciences, states that “to avoid substantial damage to ocean ecosystems, deep and rapid reductions in global CO2 emissions are necessary by at least 50% by 2050, and many more will be needed thereafter”