The seas spread around 70 per cent of the Earth’s surface, and that around 97 per cent of all water on and in the Earth is saline; there’s so much of saltwater on our planet. This salt in the ocean comes from two places. First is the spillover from the land and another is openings in the ocean bottom. Rocks ashore are the significant wellspring of salts broke down in seawater. Rainwater that falls on the earth is somewhat acidic, so it disintegrates rocks. These washes off particles from the rocks that are diverted to streams and waterways that in the end feed into the sea. A large number of the broke up particles are utilized by living beings in the sea and are eliminated from the water. Others are not eliminated, so the particles increase gradually.
Another wellspring of salts in the sea is aqueous liquids, which originate from vents in the ocean bottom. Seawater saturates, breaks in the ocean bottom and is warmed by magma from the Earth’s centre. The warmth causes a progression of mixing reactions. The water will, in general, lose oxygen, magnesium, and sulfates, and get metals, for example, iron, zinc, and copper from nearby rocks. The warmed water is delivered through vents in the ocean bottom, conveying the metals with it. Some sea salts originate from submerged volcanic emissions, which legitimately discharge minerals into the sea.
This salt is the only reason why seawater is very much useless for us. While people can securely ingest little quantities of salt, the salt substance in seawater is a lot higher than what can be handled by the human body. Human kidneys can just make pee that is less pungent than saltwater. Hence, to dispose of all the abundance salt taken in by drinking seawater, you need to pee more water than you drank. In the end, you bite the dust of lack of hydration even as you become thirstier. We can surely use the water to obtain salt from it through evaporation. But we cannot use the seawater itself in its current condition.
Also Read: Importance of drinking water
