The salinity of ocean water is due to high concentrations of: a. Potassium chloride
c. Sodium manganate
b. Sodium chloride
d. Sulfur chloride

D) chloride and sodium (sodium chloride)

Explanation:

Two of the most prevalent ions in seawater are chloride and sodium. Together, they make up around 85 percent of all dissolved ions in the ocean. Magnesium and sulfate make up another 10 percent of the total. Other ions are found in very small concentrations.

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