7. What do the similarities of the structures suggest?
a. evolved slowly c. common ancestor
b. lived a long-time d. grow at different rates
8. Which of the following does not describe relative dating?
a. Method used to determine the age of the rocks by comparing them with the
rocks in the other layer.
b. Method used to determine the age of rocks using the decay of radioactive
isotopes present in rocks.
c. Fossils found at the bottom layer are assumed to be older than those on the
upper layer.
d. Both a and c
9. Which of the following pieces of evolution evidence deals with structures common
in embryos that form differently or for different purposes in adult form? a.
fossil record c. comparing embryology
b. comparing DNA d. comparing anatomy

10. Scientists find fossilized bones of a huge animal that doesn’t exist today.
What type of evidence is this?
a. fossil record c. comparing embryology
b. comparing DNA d. comparing anatomy