Question

It is easier to swim in sea water than
in river water. Explain the reason.
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Answer 1

since the sea water is saline in nature than river water, thus it also has more density than river water and the person swimming in the sea has less chances of sinking down

Answer 2

it is easier to swim in sea water than in river water because sea water contains salt which increase its density so that we can easily swim in it on the other hand river doesn't have such quality.

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