Understanding human evolution, unlike that of other species, is particularly complex because of:
a. the incomplete fossil record
b. the rapid rate of decomposition among mammals
c. the presence of culture
d. the frequent migration associated with our species
Question 2
Scientists have found evidence of the earliest dental drilling to relieve pain as old as:
a. 12,000 years ago.
b. 9,000 years ago.
c. 5,000 years ago.
d. 2,500 years ago.
e. 1,300 years ago.
