A lake may be described as "dead" when its condition is
A. saline.
B. aerobic.
C. eutrophic.
D. anaerobic.
Answer: D
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Why is peridote considered a coarse-grained ultramafic rock?
A) It contains a lot of silica. B) It contains a lot of feldspar. C) It contains a medium amount of silica. D) It contains very little silica.
Which of the following best matches the description?Construction of an orderly list of priorities for the use of available land.
A. multiple land use B. tract development C. megalopolis D. urban sprawl E. land-use planning F. zoning G. floodplain zoning H. floodplain I. ribbon sprawl J. wetlands
If clay minerals in a sedimentary rock were buried at a depth where subsurface temperatures exceeded 200°C, which common metamorphic mineral would they become?
A) Quartz B) Muscovite C) Amphibole D) Plagioclase
Physical and cultural geographers see Iceland and Greenland as ________
A) Divided, because the geology of Iceland is the world youngest, and Greenland is the geologically oldest yet discovered B) Divided because the geology of Greenland is the world youngest, and Iceland is the geologically oldest yet discovered C) Undivided, because the geology of both Iceland and Greenland are some of the world's youngest D) Undivided, because the geology of both Iceland and Greenland are the geologically oldest yet discovered