The common nonsilicate mineral groups include
A. carbonates.
B. oxides.
C. sulfides.
D. sulfates.
E. halides.
F. All of these choices are correct.
Answer: F
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A community may undergo a regime shift or a phase shift when ________
A) they suffer a natural fire or flood B) lose keystone species or suffer a major climatic change C) pollutants cause a rapid rise in mutations D) all invasive and exotic species are removed E) have too many symbiotic relationships among species
Why is glacial ice analogous to a metamorphic rock?
A) It has a definite chemical composition. B) It has a crystalline structure. C) It forms as a result of recrystallization caused by pressure. D) It is solid.
Which country has the greatest installed capacity of wind turbines worldwide, creating more than 114,000 megawatts of electricity in 2014?
A) United States B) Germany C) China D) Australia
The intensity of an earthquake ________. Choose the only description that does not fit.
A. is described using the Mercalli scale B. is useful for assessing heavily populated areas C. is its effect on people and buildings D. depends on the underlying geologic material E. is an objective measurement