During the Cold War, the line between Communist and non-Communist countries of Europe was called
A. the Iron Curtain
B. the Wall
C. the Barbed-wire Fence
D. the Demilitarized Zone
A. the Iron Curtain
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Paleomagnetism measures the ____________________ and ____________________ of remnant magnetism in rocks. What will be an ideal response?
By digesting soil, earthworms:
a. change the structure of the soil. b. change the texture of the soil. c. change the chemical quality of the soil. d. all of these
Eighty calories of heat energy must be removed per gram of pure water at 0°C to form ice. This represents water's ____
A) latent heat of evaporation B) latent heat of fusion C) sensible heat D) temperature
Which currents are the slow, deep currents that affect seawater beneath the pycnocline?
a. deep-ocean b. thermocline c. surface d. thermohaline e. turbidity