Question

What causes the saltiness in ocean water?

Answer 1

As water flows in rivers, it picks up small amounts of mineral salts from the rocks and soil of the river beds. This very-slightly salty water flows into the oceans and seas. The water in the oceans only leaves by evaporating (and the freezing of polar ice), but the salt remains dissolved in the ocean - it does not evaporate. So the remaining water gets saltier and saltier as time passes.

Answer 2

simple answer: because there is NaCl (salt) in it.. . better question: why is there water without salt in it. answer-> evaporated water, which becomes rain and snow, does not carry salt

Answer 3

Water flows into the oceans, but not out. That freshwater flowing in carries minerals in many forms, but we generally group them together as "salt." Since no liquid water flows out of the oceans, the salt doesn't leave. Water vapor, however, does, leaving behind a higher concentration of "salt," which you can more easily distinguish by its taste.