Primary succession starts with bare rock which is broken down by either lichen or moss to make soil while secondary succession starts with developed soil
Cephalization describes the process by which organisms develop a distinct head. The head of a cephalized organism contains a concentrated group of nerves, or brain, that controls the rest of the organism, as well as specialized organs for consumption and perception, like mouths, eyes and ears. Cephalized organisms exhibit a distinct division between parts of the body; they have a front, back, top and bottom. These animals comprise the bulk of animals that are encountered on a daily basis.
sea star following organisms exhibits cephalization
Answer:
1.
Explanation:
Atomic mass is protons+neutrons. Atomic number is just protons.
