【正文】
Marine Chemistry and Biological Oceanography 海洋化學(xué)與生物海洋 Biology starts with chemistry ? Biological processes – the levels of elements and pounds ? Abundance of biota and tropic relationship – chemical parameters, salinity, dissolved oxygen and nutrient Global water cycle turnover time ? The ocean has a turnover time of about 37,000 years with respect to river inflow. This is how long it would take to fill the ocean if it were totally dry. ? Turnover times are defined as the mass in the reservoir divided by the input or removal rate. By parison the average residence time of water in the atmosphere wi