Question

The salinity of Ocean is due to the presence of major element
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Answer 1

Answer:

Oceans are salty due to deposits made by rivers. Oceans make up about 70 percent of Earth's surface. ... Ocean water contains lots of different mineral salts: sodium, chloride, sulfate, magnesium, calcium, potassium, bicarbonate and bromide.

Answer 2

Answer:

Some ocean salts come from underwater volcanic eruptions, which directly release minerals into the ocean. 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