They might have a common ancestor.
your answer is:
ocean formation
island chains
seafloor spreading
(i know i picked three but i think these are the right answers)
Uracil is the nitrogenous base found in RNA but not in DNA.
Food chain- is a diagram that shows how food energy moves from one organism to another in an environment. It begins with the plant life and ends with animal life. Plants get eaten by animals and animals eat other animals.
