What is the difference between a chimp and a human with respect to the energy spent walking?
What will be an ideal response?
Humans walking on two feet use only a quarter of the energy that chimpanzees knelt on all fours. On average, chimpanzees use the same amount of energy using their legs as they do when using four legs. However, there were changes among chimpanzees in how much energy they used and this difference corresponded to their different anatomy and gaits.
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Members of a moiety:
a. belong to one of two major descent groups in a society. b. are those who are divorced (they lack their “better half”). c. are usually able to trace their exact genealogical links to their common ancestor. d. feel a much stronger feeling of kinship than is felt by members of a lineage or clan. e. belong to a group that is smaller than a lineage.
According to Sullivan and Hagen, how might psychoactive drug use been adaptive in our ancestors?
a. It decreased aggression. b. It was how we obtained essential vitamins. c. It increased stamina. d. Drug use did not occur in past environments; it is a modern phenomenon.
The United States Agency for International Development is a bilateral aid institution
Indicate whether the statement is true or false.
Human populations living in temperate, northern climates generally have light skin color because it
A. protects against hypervitaminosis. B. helps to prevent sickle-cell anemia. C. exists in a balanced polymorphism. D. helps to prevent rickets. E. helps to protect against skin cancer.