Swidden, or slash-and-burn, agriculture increases the energy that a given unit of land produces for humans by
A) burning felled trees to fertilize the soil with the ashes.
B) using land and labor to the fullest extent possible.
C) converting grassland to wheat fields.
D) growing grass to raise cattle.
E) none of the above.
A
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The "African Eve" hypothesis, which suggests that all modern humans share a common female ancestor and that populations ancestral to present day humans migrated out of Africa about 200,000 years ago, is based on
A) the discovery of "Lucy," the mother of us all. B) analysis of variability in nuclear DNA. C) analysis of variability in mitochondrial DNA. D) studies of Homo erectus fossils. E) the extinction of Neanderthals over 200,000 years ago.
According to the multiregional model
A) both the Neandertals and the Homo heidelbergensis people would have contributed genes to modern people B) beneficial traits which evolved in one part of the geographical range would have become available throughout the range by gene flow C) the primary mechanism of evolution to modern human populations was genetic flow D) there are transitional forms in the fossil record to document the transition from archaic to modern status all over the Old World E) all of the above
Define globalization
What will be an ideal response?
Possibly the earliest domesticated animal was __________
a. pigs in China b. llamas in South America c. cattle in Africa d. goats in the Middle East