Why do slash-and-burn cultivators stop using a plot of land every two to three years?
A.They burn so much wood that the air becomes too polluted to support a healthful
existence.
B.Slash-and-burn cultivation is unique to segmentary-lineage organized societies, and
crop rotation follows the cycle of interlineage exchange.
C.Slash-and-burn cultivation is associated with big-game hunting, which requires
regular movement so as not to deplete the animal population.
D.Slash-and-burn cultivators use relatively primitive irrigation systems, which have to
be repaired every three to four years.
E.The wild vegetation needs time to reestablish itself before it is burned to clear the
land and fertilize the soil.
In Arembepe, Brazil, a degree of community solidarity was promoted by the myth that
everyone was kin. However, social solidarity was actually much less developed in
Arembepe than in societies with clans and lineages. Why?
A.Intense social solidarity requires not a myth but a biologically grounded genealogy
that shows people’s actual relatedness.
B.Arembepeiros who became successful were bound by social obligation to share their
wealth. This powerful leveling mechanism worked against social solidarity.
C.In societies with clans and lineages, social solidarity is much more developed,
because they have more elaborate kinship rituals than Arembepeiros do.
D.Intense social solidarity is possible only in societies having homogeneous ancestry. In
Arembepe, high ethnic diversity weakens kinship ties.
E.Intense social solidarity demands that some people be excluded. By asserting they
were all relatedthat is, by excluding no oneArembepeiros were actually weakening
kinship’s potential strength in creating and maintaining group solidarity.