Question

It is easier to swim in an ocean than in a river,why?

Answer 1

it is easier to swim in sea water than in a river because, the sea water contains salt which increases the density of water and also increases its upthrust so, the body sinks less in it and we swim easily ...

Answer 2

Answer:

there is salt content in the ocean which makes it easier to swim in the ocean where as in the river there is no salt content