Which of the following is not a factor in the slow development of central asia's natural resources?
a.
threat of hurricanes
c.
corruption
b.
ethnic conflict
d.
poor transportation links

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which are evidence of the seafloor spreading? a. molten material b. magnetic stripes c. continental material d. drilled core samples e. ocean water samples

In africa what do they call a crop grown for direct sale and not for use?