Drought conditions
in
an
agricultural
area
often
impacts
food
production
for
example
during
a
dry
spell
in
2014
stockpiles
of
corn
in
the
United
States
decreased
forty-eight
percent
between
March
and
June

The correct answer is b, social stratification is needed for a society to exist. marxist theory regarding social stratification is that due to the differing economic capacities among people in society, a natural separation occurs between those that own the means of production and those that sell their labour in the production chain.