What is the type of stream transportation by a series of short leaps or bounces off the bottom of the streambed?
A. abrasion
B. traction
C. saltation
D. suspended load
Answer: C
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What best describes the natural growth rate in contemporary Europe?
A) fast growth in large nations such as Germany but slow growth in most smaller nations B) extensive population decline in every country C) there is a lack of natural growth as death rates exceed birth rates D) an extremely high rate of growth E) a moderate rate of growth
Perched aquifer or perched water table can form when:
a. the water table of an aquifer rises b. the vadose zone is filled with water c. an aquitard creates localized zone of saturation d. both b and c
Many ore deposits result from contact metamorphism during which hot, ion-rich fluids ____
A)migrate from surrounding rock into igneous intrusions B)migrate from igneous intrusions into the surrounding rock C)melt the surrounding rock which precipitates the ore D)reach Earth's surface forming ore deposits as they move E)become electrically neutral and react chemically with the surrounding rock
In the effective stress equation, the total vertical stress acting on a horizontal plane at some depth is equal to:
a. the effective stress plus the fluid pressure b. the effective stress minus the fluid pressure c. the effective stress times the fluid pressure d. the effective stress plus cohesion