Which of the following is an example of a speleothem?
A) A stalactite
B) A doline
C) A mogote
D) A sinkhole
E) A cavern
Answer: A
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The atmosphere around the earth would rush off into space if the vertical pressure gradient force
were not balanced by: a. the Coriolis force. b. the horizontal pressure gradient force. c. gravity. d. the centripetal force. e. friction.
Primary succession is
A. a progression that begins with a total lack of organisms. B. a progression that begins with destruction of an existing ecosystem. C. of very short duration. D. All of these are correct.
According to Hadley, the most important factor causing circulation patterns in the atmosphere was:
A) subsidence. B) equator-pole temperature contrast. C) convection. D) high-low pressure distribution.
The Cascadia subduction zone off the coast of Washington and Oregon famously lacks a well-defined deep-ocean trench. Why might this be the case?
A) Compression from the convergent boundary has squeezed any potential trench closed. B) There is a massive amount of sediment fill from the Columbia River basin. C) The descending plate is warm and buoyant, so it subducts shallowly. D) There is a shallow angle of plate subduction, as well as large quantities of sediment infill.