Trace elements in seawater are

Question

Quizplus · Accepted Answer

Trace elements, such as iron, zinc, and copper, are necessary for metabolic processes in many marine life forms, including phytoplankton, which form the base of the marine food chain. While some trace elements can be toxic in high concentrations, they are essential at lower concentrations. Therefore, option A and C are incorrect. Trace elements are only a small component of the total salt content of seawater, which is primarily composed of sodium and chloride ions, making option D incorrect. Option E is also incorrect as most trace elements are present in relatively constant concentrations regardless of salinity.

Trace Elements in Seawater Are