Question

13 Why should animals become

adapted to live in fast-flowing
water when there are regions
of slow-moving water in a
river?​

Answer 1

If the animals adapted to fast flowing are found in slow moving water- it could be: 1) They are temporarily dislodged & will get back to its original position or search for a suitable place. 2) If the niche is the same, slow moving water might be only a temporary phenomenon.