Where does most of the material on the continental shelf come from?
A) Erosion from the adjacent continent
B) Sediments transported from rivers
C) Accumulations behind natural dams
D) New crust formation
A
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The rocks of continental shields often contain rich concentrations of metal ores
Indicate whether the statement is true or false.
What marks the submerged limit of rapid marine erosion?
a. Sea cliffs b. Wave-cut platforms c. Sea caves d. Blowholes e. Berms
The Appalachian and Ouachita mountains represent ancient mobile belts
Indicate whether the statement is true or false
Methods for desalinating sea water to produce fresh water include ________
A) reverse osmosis and distillation B) making sea water acid to transform salts to solids C) treating with activated charcoal and clay D) treating sea water with salt-consuming marine bacteria E) filtration and sedimentation