The answer is prokaryotic cells and Eukaryotas.
The liver is at a #3 level of organization, an organ..which has a specific job to do in the body.
DNA is made of a double helix of two complementary strands. When replicating, these strands seperate. Each strand of the original DNA then acts as a template for the production of it's counterpart, which is referred to as semiconservative replication.
Answer:
Older rock layers are found under younger rock layers
Explanation:
It directly states in the sentence above the diagram that the bottom layer of rock is the oldest.
I know that he found finches in different areas with different beak shapes....he found this was caused by the type of seeds that were available on the different islands...over time (evolution) their beaks changed to allow them to be able to survive (survival of the fittest)