Question

River dolphins are morphologically distinct from other dolphins and are primarily restricted to freshwater ecosystems in Asia and South America.
a. True
b. False

Answer 1

Answer:

a. True

Explanation:

• The river dolphin is a group of aquatic animals that is specially adapted to the fresh water and are relatively smaller compared to the other dolphins.

• They have evolved to survive in shallow waters and strong-river currents. These dolphins are not very widely disturbed and are found in certain deltas and rivers.