D.all of the above
E.only A and B
Which of the following statements concerning the nature of locomotion for
Australopithecus afarensis is correct?
A.They likely employed a combination of knuckle walking and bipedalism.
B.Their gait was largely identical to that of modern humans.
C.Although obligate bipeds, they likely still spent considerable time exploiting arboreal
environments.
D.They represent non-obligate bipeds, adapted for occasional terrestrial forays.
E.none of these
What factors account for the relative unimportance of farming in much of the New
World prior to the arrival of Europeans?
A.An agricultural diet was not nutritionally superior.
B.Maize was difficult to harvest and process by hand.
C.Many groups continued to utilize hunting and gathering to supply sufficient protein.
D.The most productive domesticates were difficult to introduce to temperate areas.