Current evidence indicates that the replacement model:
A. might be a better fit to the data than the regional continuity model
B. suggests that there was some interbreeding between modern Homo sapiens as they moved out of Africa into other areas and pre-modern Homo sapiens
C. suggests that the replacement of pre-Homo sapiens populations was incomplete
D. all of these
D. all of these
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Infinite needs most characterize which economic system?
A) foraging B) horticulture C) agriculture D) industrialism/digital economy
Because our planet's climate is always changing, the key question becomes: How much of global warming is caused by human activities versus natural climate variability? On this issue, most scientists agree that the causes are mainly
A. indigenized. B. anthropogenic. C. ecological. D. moral. E. evolutionary.
Hominid migration out of Africa
A) could have occurred prior to the evolution of Homo erectus B) might have been the result of increasing population C) almost certainly occurred after the beginning of the first important Plio-Pleistocene glaciations D) might have been facilitated by lowered sea levels and exposed land bridges around 2.0 to 2.3 million years ago E) all of the above
Mechanisms by which behavior is constrained and directed into acceptable channels, thus maintaining conformity, is referred to as:
a. behavior modification. b. social control. c. hegemony. d. political repression.