The zone of saturation extends to an indefinite depth
Indicate whether the statement is true or false
False
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Along divergent plate boundaries, magma formation takes place typically due to:
a) melting of the plates as they move apart as a result of frictional heating b) increased pressure from plate movement c) pressure being reduced (decompression melting) as the plates move apart d) water being released under pressure which lowers the melting temperature of the overlying asthenosphere e) hot spots, which always occur along divergent boundaries
What contributes to the high biological activity and surface nutrients in southern polar waters?
a. Deep-water upwelling b. Weak stratification c. There is a lack of continental margins d. All are contributing factors
Global positioning systems (GPS) can "know" their location by
A. relating changes in detected radiation to changes in the position of the Sun. B. continually measuring changes in angle to a stationary reference point, such as a streetlight, in the area of the receiver. C. relating slight changes in magnetism and gravity to changes in the distance and direction of movement from the point at which the location of the receiver was last calibrated. D. measuring the time required for radio signals from four or more satellites to reach the receiver.
When an occluded front passes, the temperature drops dramatically
Indicate whether the statement is true or false