3. How has the discovery of oil in some Southwest Asian countries affected the economic development of this area?
a. Those with oil need less water than the other countries
around them.
b. Having oil has made very little difference in the economy
of this region.
c. The discovery of oil has meant that no other industries
have developed in the region.
d. Those countries with oil reserves are much richer than
those countries that have not found oil in their territory.