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Why the water of ocean ,sea is salty ?why not of river ,pond?

Dear student,                     
​Please find below the solution to the asked query     

Sea water contains a very large amount of dissolved minerals that are carried from the land by rivers, especially sodium chloride (common salt). These dissolved minerals originate from the weathering and breaking up of minerals on land. Dissolved sodium chloride makes up to 77 %. The other mineral compounds are magnesium, calcium and potassium. These minerals together make sea water saline and the salinity of sea water varies depending on the rate of evaporation. Higher the rate of evaporation, higher the salinity and vice versa. Thus sea water at the Equator and close to it is saltier and sea water closer to the poles is less saltier. Some solid and gaseous matter that has escaped from the interior Earth's through volcanic vents also add to the salinity.​

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Any body of water without an outlet will become salty. Even water on land will be salty if it has no outlet (e.g. Great Salt Lake, Dead Sea).

Water is a great solvent, so it picks up particles that form salts (not sure if it picks up the ions or picks up the whole salts) as it goes over land as rainwater or flows through riverbeds. These particles will accumulate over time, turning the water salty, if water escapes only through evaporation and does not flow out in liquid form, which would carry the dissolved particles, as well.
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Why we can see bubbles when we push a glass into water and tilt it?
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DEAR FRIEND,
THE WATER OF OCEAN ,SEA  IS SALTY BECAUSE RAINWATER  DISSOLVES  THE  SALT MINERALS FOUND IN SOIL AND ROCKS AS IT   TRAVELS  THROUGH RIVERS AND  STREAMS EN ROUTE  TO THE SEA  .THIS METHOD OF MINERALS DISSOLUTION IS  CALLED   WEATHERING . AND AS I HAVE    TELL YOU THAT  THE  SALT MINERALS TRAVEL THROUGH  RIVERS AND  STREAM EN ROUTE TO THE SEA .SO ALL THE  SALT MINERALS GET INTO THE  OCEAN AND SEA ONLY.                                                 HOPE  YOU UNDERSTAND
REGARDS
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SHE IS RIGHT
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THE 1ST ONE
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Because in sea it's high concentration of salt
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thanks
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