Question

why is the sea water salty .​

Answer 1

Salt in the ocean comes from two sources: runoff from the 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. ... Ocean water seeps into cracks in the seafloor and is heated by magma from the Earth's core.

Answer 2

Answer:

Salt in the ocean comes from two sources: runoff from the 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. ... Ocean water seeps into cracks in the seafloor and is heated by magma from the Earth's core.