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As we know that sea water is saltier than river water which means that sea water has dissolved salts in it.
Due to these salts, the density of sea water is more than river water.
So, the upthrust in case of sea water will be more and person is able to swim more easily in sea water as compared to river water.
Due to these salts, the density of sea water is more than river water.
So, the upthrust in case of sea water will be more and person is able to swim more easily in sea water as compared to river water.
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