By about __________ B.C.E., archaeologists had found most of the major characteristics of civilizations.
A) 4500
B) 3500
C) 5500
D) 2500
B) 3500
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An individual with trisomy 21 has __________ of chromosome 21
a. no copies b. only one copy c. two copies of d. three copies
Darwin's theory that the "fitter" survive and reproduce more offspring, who then inherit the traits that made their parents "fitter" is called
A. heredity B. survival of the fittest C. mixed reproduction D. natural selection
The term "Second World" refers to __________
A. modern industrial states B. premodern agricultural states C. industrial states with socialist economies D. North, Central, and South America
Undergraduate students interested in archaeology usually take classes in:
A. geology. B. anthropology. C. zoology. D. geography. E. All of the answers are correct.