Why Is the Sea Salty?
Salt in the Sea, or Ocean Salinity, Is Mainly Caused by Rain Washing Mineral Ions from the Land into Water. Carbon Dioxide in the Air Dissolves into Rainwater...
Salt in the sea, or ocean salinity, is mainly caused by rain washing mineral ions from the land into water. Carbon dioxide in the air dissolves into rainwater, making it slightly acidic. ... Isolated bodies of water can become extra salty, or hypersaline, through evaporation. The Dead Sea is an example of this.
Why is sea water salty short answer?
Ocean salt primarily comes from rocks on land and openings in the seafloor. ... Rocks on land are the major source of salts dissolved in seawater. Rainwater that falls on land is slightly acidic, so it erodes rocks. This releases ions that are carried away to streams and rivers that eventually feed into the ocean.
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Why are the oceans salty but not lakes?
Rain replenishes freshwater in rivers and streams, so they don't taste salty. However, the water in the ocean collects all of the salt and minerals from all of the rivers that flow into it. ... In other words, the ocean today probably has a balanced salt input and output (and so the ocean is no longer getting saltier).
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