The slash-and-burn method requires:
a. an extensive land use system with a lengthy fallow period.
b. the use of purchased fertilizers to put nutrients back in the soil.
c. low biomass, so there is not much to interfere with planting.
d. the use of tractors or draft animals, minimizing the need for a labor force.
e. the use of domesticated animals for plowing.
a
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Which of these is an example of natural causation?
a. Sorcery b. Infection c. Soul loss d. Spirit aggression
Captive studies __________
a. involve very large enclosures or even small islands b. are conducted in the habitat in which the species evolved c. allow for behavioral experiments to be conducted d. are extremely unethical and illegal
The Middle Pleistocene hominins that lived between H. erectus and the Neandertals from roughly 850,000 and 200,000 B.P. were known as
A. Denisovans. B. H. heidelbergensis. C. H. rudolfensis. D. H. floresiensis. E. H. habilis.
_________ is a mechanism by which human populations cope with high altitudes
a. Hypoxic ventilatory response (HVR) b. Basic vasodilation (BV) c. Pupil constriction (PC) d. Extensive uncontrolled vasoconstriction (EUV)