The valleys around the nile, euphrates, and tigris rivers were probably

a.
where the first farmers settled.

b.
the location of a major battle between egyptians and sumerians.

c.
a glacier in ancient times.

d.
first discovered during the 1700s.

Why is the future for life on earth bleak?

Which of the following best describes the economy of africa?

Reading graphs: unemployment us unemployment rate (1961-2011) identify the trends in the graph and then use the drop- down menu to complete each statement from 1961 to 1965 unemployment was in the mid-2000s through 2011. unemployment was percentage unemployed 1961 1971 1981 1991 2001 2011 year