In the U.S., manufacturing centers are generally clustered in the:
A) old Northeastern manufacturing belt
B) deep South
C) Midwest
D) valleys along the Mississippi River
E) cities along the Mississippi Delta
Ans: A) old Northeastern manufacturing belt
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Countries have revived regional economic agreements mainly through
A. trade B. the environment C. exchange students D. defense
Upwelling ________
A) is the flow of warm water upward toward the ocean surface B) transports oxygen from deep to surface waters C) occurs in areas where there are no currents D) brings benthic nutrients to the ocean surface promoting high primary productivity E) occurs when winds blow at right angles to a coastline
Groundwater is the largest source of usable liquid freshwater on Earth.
a. true b. false
The oxygen in the atmosphere is primarily derived from ________
Fill in the blank(s) with the appropriate word(s).