The residence time of iron and sodium in the oceans is approximately the same.

Question

Quizplus · Accepted Answer

Iron has a much shorter residence time in the ocean compared to sodium. Iron is a micronutrient that is rapidly utilized by marine organisms and is also removed from seawater through processes like adsorption onto particles, making its residence time much shorter. Sodium, on the other hand, is a major ion in seawater with a very long residence time, as it is not readily removed from the ocean.

The Residence Time of Iron and Sodium in the Oceans