Current evidence suggests that there were __________ separate early migrations of humans to the New World.
A. 1
B. 2
C. 3
D. 4
C. 3
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Evidence from Zhoukoudian suggests that Homo erectus
a. lived there continuously for over 250,000 years. b. were settled agriculturalists. c. intermittently occupied the area. d. built wooden structures. e. kept domesticated animals.
All of the following are characteristics of a perfectly competitive market except which one?
A) no barriers to entry B) perfect information C) heterogeneous goods D) no transaction costs
The part of the cell responsible for regulating the transport of materials into and out of the cell is the __________
a. nucleus b. cytoplasm c. organelle d. plasma membrane
Which of the following statements about culture is TRUE?
A. It is the exclusive domain of the elite. B. It is acquired by humans as members of society through the process of enculturation. C. It developed among nonhuman primates around 10,000 years ago. D. It is more developed in industrial nations than among hunters and gatherers. E. It is being destroyed by electronic media.