In nutrient cycles in general, minerals tend to be dispersed through ________
A) plant action
B) surface and subsurface runoff
C) evaporation
D) assimilation
E) conduction
Answer: B
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It has been proposed that the reason that the Pacific Ocean has many more coral reefs than the Atlantic Ocean is that
A) the Atlantic Ocean is too saline for many coral species. B) the ocean currents in the Atlantic are too swift to allow for coral reefs to develop unimpeded. C) the last glacial advance left the Atlantic too cold to allow coral to survive. D) there are too many large rivers discharging polluted waters into the Atlantic basin to support as many coral reefs as in the Pacific, which is much larger and more immune to the pollution.
Seismic gaps are:
a. nonseismic intervals between frequent earthquakes along a particular fault b. portions of seismograms that lie between the arrival of P and S waves c. segments of active faults that experience frequent earthquakes d. segments of active faults that have not produced earthquakes for a long period of time
At the edge of a cliff you throw one ball downward and another ball upward at the same speed. With negligible air resistance, which ball hits the ground faster?
A. The ball thrown upward. B. The ball thrown downward. C. Both hit with the same speed but not at the same time. D. none of the above
Which of the following rocks cannot be metamorphosed?
A) Shale B) Sandstone C) Limestone D) All of these can be metamorphosed.