Most continents contain large central areas in which very ancient rocks are exposed. These areas
are called
a. Precambrian shields. d. continental slopes.
b. platforms. e. orogenic belts.
c. continental shelves.
A
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Today in the United States, the principal type of interregional migrations is from ________ to ________ areas
A) rural, urban B) suburb, urban C) urban, suburban D) east, west E) west, east
Turbidity currents deposit sediments in ____ beds with ____
a. graded; fine sediments on top and coarse sediments on bottom b. stratified; fine sediments on top and coarse sediments on bottom c. graded; coarse sediments on top and fine sediments on bottom d. cross; fine sediments on top and coarse sediments on bottom e. cross; coarse sediments on top and fine sediments on bottom
Most tornadoes are classified as ________
A) incredible B) catastrophic C) violent D) devastating E) light or moderate
Where do most immigrants to France come from?
A) Quebec, Canada B) Former French colonies in North Africa and West Africa C) Hong Kong D) Eastern Europe E) India and Pakistan