Author Question: By the end of the Ice Age, there may have been_ humans, or _______. a. 10 ... (Read 20 times)

student77 · **on:** Jul 10, 2018

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.

Question 2

For most of hominin history

a. our ancestors' reproductive capacity was much different from our ape cousins.
b. a woman gave birth every three or four years.
c. women gave birth every two years, then a few thousand years ago began to give birth every three or four years.
d. infant mortality rates were different than those of early farmers and some communities today.
e. had a relatively worse environmental record before the end of the Ice Age.