If an isotope has a half-life of 4 billion years, then in 4 billion years
a. all of the original amount will have decayed.
b. ¼ of the original amount will still remain.
c. ½ of the original amount will still be present.
d. all of the original amount will still be present.
e. none of these
C
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The oldest evidence for the beginnings of a cultural lifestyle comes from
A) the australopithecines B) Homo erectus C) early Homo D) Ardipithecus ramidus E) Paranthropus at Swartkrans
Morphological variation between individuals WITHIN a species
a. may be the product of male/female morphological differences. b. is called interspecific variation. c. is of no concern to anthropologists. d. is unimportant when interpreting the fossil record. e. produces large numbers of identical individuals.
The Sanos found that __________ changed their relationships with people in town for the better after their first year in "Riverfront" Wisconsin
a. the birth of their son b. their newly acquired American citizenship c. the death of the local mayor d. their jobs as university professors
According to the Castles and Miller reading (from the Age of Migration, assigned for the Causes of Migration class), the historical-structural approach is the most comprehensive theory about the causes of international migration
a. true b. false