An important trend in animal evolution was cephalization. an animal is said to show cephalization when it see concept 32.3

An important movement in an animal evolution was cephalization. An animal is said to display cephalization when it has an aggregation of sensory. Cephalization is studied an evolutionary trend, where nervous tissue, over many formation, becomes fixed toward one end of an organism.

Abay where the river empties into the sea