Multiple choice

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

  1. Sea water is a large water body.

  2. Movement in sea water is less.

  3. Sea water has more of dissolved oxygen.

  4. Sea water is saline.

  5. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is correct as salts dissolved in sea water increase the density and hence, it exerts more upward thrust.