The yield per person per unit of land is known as:
A) population density.
B) labor input.
C) efficiency.
D) productivity.
E) subsistence.
D
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An unconformity is:
A. a scientific theory that does not conform to other theories on the same general phenomenon B. a hoax, such as the Piltdown hoax C. a surface that represents breaks in the stratigraphic record D. an index fossil that appears to be from the wrong time period
Which of the following is NOT a scenario for the evolution of bipedalism?
a. energy efficiency b. tool making c. ecology d. sexual selection
The exchanges between parents and children in the United States are examples of reciprocity
a. True b. False Indicate whether the statement is true or false
According to your text, paleoanthropologists suggest that the fossil forms called __________ were the immediate predecessors to the genus Homo
A. Aegyptopithecus B. Proconsul africanus C. Australopithecus D. Ardipithecus