Replication/ reproduction. one side copies then replicates and matches up. hope this helps
Answer:
Option c because from what i know they change to have a more specialized type. Hoping this helps!
The planets in our solar system orbit the sun because of its large gravitational force just like how the moon orbits earth
Cardiovascular system - contains all of our muscles necessary , skeletal system- contains the bones to create the shape of the body and respiratory system which allows us to breathe