Why is it easier to swim in sea water than in river water?

Why is it easier to swim in sea water then in a river water?

Why is it easier to swim in sea water than in fresh water?

Why is it easier to swim in sea water than in a river?

Why is it easier to swim in sea water than in the river water ?

Why is it easier to swim in sea water thasn in fresh water?

Assertion (A) : It is easier to swim in sea water than in river water. Reason (R): Density of sea water is more than that of river water.

Give reason for the following case: It is easier to swim in sea water than in river water.

Explain the following : It is easier of swim in sea water than in river water.