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

Environmental & Atmospheric Sciences

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The atmosphere around the earth would rush off into space if the vertical pressure gradient force

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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.

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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.

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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.

Environmental & Atmospheric Sciences