Where are most seafloor spreading centers located?
a. continental margins
b. polar regions
c. undersea volcanoes
d. mid-ocean ridges

The district of columbia could be eliminated completely if a majority of congress voted in favor of the action. a. true b. false

Acivilization exists for several hundred yeaars, developing its own language. such a civilization probably has been: a. farming corn b. suffering from a lack of contact with the outside world. c. isolated by mountains or some other physical barriers. d. starving from lack of trade.

Rah is completing a school project on the expansion of fast food restaurants across the united states. she finds a map that shows a clear pattern of restaurants beginning in the east and expanding west. this map was most likely created using the technology of