Mineral crystals may exhibit ________ with a specific cation in the center and a different cation on its rim.
A. cleavage
B. double refraction
C. polymorphism
D. compositional zoning
Answer: D
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Most of the efforts of the United Nations to promote food security, including the World Food Program, function at the
A) global level. B) national level. C) family level. D) personal level.
Which of the following is not true concerning an easterly wave?
a. moves from east to west b. has converging winds on its western side c. showers and thunderstorms may be found on its eastern side d. indicates a region of lower-than-average pressure
The hydrologic cycle includes all of the following processes except
A) evaporation. B) precipitation. C) runoff. D) uplift.
Chemical sedimentary rocks can have a clastic texture or an interlocking grain texture called ____
A)evaporitic B)porphyritic C)particulate D)crystalline E)detrital