Biological evolution is the change that occurs in a population over the course of _________.
Generations
_______ ________ is a process that causes evolution and occurs when some individuals in a population have greater or lower survival or reproduction than others.
Natural Selection
The evolution of pesticide in lice is an example of _______.
micro
A scientific ______ is an explanation of how things work that is supported by multiple lines of evidence.
Theory
The theory of common descent states that all life shares a single _____ ______.
Common Ancestor