13. Scientists compared fossil remains of a species that lived 5,000 years ago with members of the same species living today. Scientists concluded that this species had changed very little
over the entire time period. Which statement best accounts for this lack of change?
A. The environment changed significantly and those offspring without favorable
characteristics died.
B. The environment changed significantly, but the species had no natural enemies for a
long period of time.
C. The environment did not change significantly and those offspring expressing new
characteristics survived their natural enemies.
D. The environment did not change significantly and those offspring expressing new
characteristics did not survive.