When the "Mitochondrial Eve" hypothesis was first suggested, the fossil evidence of modern humans only when back to about __________ years ago.
A. 10,000
B. 25,000
C. 40,000
D. 90,000
C. 40,000
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What is not true of the period from the Industrial Revolution to the present?
a. No single factor explains the dangerously accelerating growth rate of world population. b. The growth rate of world population is equally distributed among nations. c. Resources are not distributed equally among all nations. d. It has reached the point where 48 percent of the world population exists on less that $2/day. e. The growth rate is unsustainable.
The Customary Law Project in Papua New Guinea contributed all of the following EXCEPT _____
a. a legal database of customary law followed by different social groups b. a formal list of effective social sanctions to be used c. a basis for lawyers to research legal precedence and establish a formal legal system in the country d. a means to alleviate conflict between customary law and the national legal system e. the development of a family bill to recognize customary marriages and the institution of polygyny
Which of the following statements about adaptation is incorrect? a. Many traits have no adaptive function
b. Adaptations are adjustments to a specific environment. c. Adaptation at a genetic level reveals natural selection. d. Natural selection and adaptation always promote genetic change.
Hypoxia:
a. ?is a problem for people living at sea level during certain seasonal periods. b. ?is a form of racial-based eugenics. c. ?occurs at higher altitudes because the atmosphere contains less oxygen than at sea level. d. ?is more common among light-skinned people than dark-skinned people. e. ?is the reduced availability of oxygen.