Which of the following statements is true about an Ekman spiral?
A) The net flow of a wind-driven surface current in the Northern Hemisphere will flow at about a 50° angle to the wind.
B) With increasing depth, each layer will move faster than the overlying layer of water.
C) Because of Ekman transport, at some frictional depth, water will be moving in the opposite direction from the surface current.
D) An Ekman spiral is not influenced by the Coriolis effect.
C
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A valley or anabatic breeze is created when
A) air from lower elevations is heated more efficiently and rises, creating an upslope breeze. B) air from higher elevations is heated more efficiently and rises, creating a mountain breeze. C) air from lower elevations is heated less efficiently and rises, creating an upslope breeze. D) air from higher elevations is heated more efficiently and sinks, creating a mountain breeze.
In mass movement, rocks roll, slide, or freefall downhill under the steady pull of gravity
Indicate whether the statement is true or false.
Once living organisms reach a balance with their environment, they do not undergo any more natural selection
Indicate whether the statement is true or false
Prior to the arrival of human beings, the flora and fauna on the Hawaii 'an Islands was similar to which of the following?
A) Similar to the Marshall Islands and the Samoa B) Similar to Australia, and New Zealand C) Similar to Mexico D) Entirely unique