Which statement about caves is false?
A)They form underwater.
B)They are formed by deposition of calcium carbonate.
C)They form naturally and are open to the surface.
D)The majority of caves are small.
E)They are commonly found in regions with karst topography.
B
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The dark igneous features shown in this photograph are
A) dikes.
B) sills.
C) volcanic necks.
D) batholiths.
Which of the following geologic features is not required for an oil or gas deposit to form?
A) source rock B) cap rock C) reservoir rock D) volcanic rock
The type of ocean current that is driven by differences in temperature and salinity is a ________ circulation
A) Ferrel cell B) gyre C) thermohaline D) Coriolis effect E) Hadley cell
The soil shown in the photograph below has a reddish tint, which may mean that
A. it has been waterlogged at some point. B. it has abundant aluminum and/or iron oxides. C. there are salts or other minerals that have been deposited by the evaporation of water. D. it contains abundant organic matter.