By the end of the Ice Age, there may have been___________ humans, or
_________________.
a. 10 million, one person for every 5 square miles of land surface.
b. 100 million, one person for every 100 square miles of land surface.
c. 5 million, one person for every 10 square miles of land surface.
d. 1 million, five persons for every 1 square mile of land surface.
e. 1000 people, one person for every 10 square miles of land surface.
Which of the following presents the primary challenge that the Bering Land Bridge
represented the first route for the first humans in the New World?
a. the earliest occupations pre-date the presence of Beringia
b. many early occupations pre-date the presence of the Ice Free Corridor
c. there are no Upper Paleolithic sites in northern Asia at the time of first settlement
d. modern Native Americans are genetically unrelated to northern Asian populations
e. the technologically simplest way to enter is not on foot
The Nariokotome Homo erectus specimen