The ____ exists where the westerlies and polar easterlies meet
a. doldrums
b. polar front
c. middle latitude convergence zone
d. Icelandic front
e. Southern Oscillation
b
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The U.S. National Wildlife Refuges system is most effective at protecting ____.
A. small mammals. B. migratory waterfowl. C. large mammals. D. songbirds. E. reptiles.
Consider the history of a single crystal of quartz. Describe how could this quartz grain could (a) form in a granite, (b) become incorporated into a sandstone, and (c) be transformed into a quartzite?
Explain the processes which act on the quartz crystal and the transformations it experiences. Detail the processes which would take place along each portion of this journey. What will be an ideal response?
Why are buried oil and gas pipelines vulnerable to damage during a flood?
a. The pipes rise with the rising water level, causing the pipes to break. b. The large amounts of sediment flowing during a flood puts additional pressure on the pipes. c. Channel scour can erode down to the pipeline level, and tumbling rocks can sever the pipe. d. When the levee is overtopped, the dropping water level can expose the pipe, leading to damage. e. If the oil and gas are shut off, the pipe becomes lighter and can float to the bankfull level.
Which of the following is true regarding phase changes?
A. All phase changes require energy. B. All phase changes involve the release of energy. C. Energy is released when going from higher to lower energy state. D. Energy is required to go from a higher to lower energy state.