What are the six common nonsilicate mineral groups?
a. oxides, feldspars, carbonates, halides, sulfides, sulfates
b. feldspars, micas, pyroxenes, amphiboles, olivines, clays
c. oxides, native elements, carbonates, halides, sulfides, pyroxenes
d. oxides, native elements, carbonates, micas, sulfides, sulfates
e. oxides, native elements, carbonates, halides, sulfides, sulfates
e. oxides, native elements, carbonates, halides, sulfides, sulfates
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The U.S. government allocates approximately ________ percent of its GNI to foreign aid
A) 12 B) 7 C) 2 D) 1 E) 0.2
The type of fault shown in this figure is a(n)
A) normal fault.
B) reverse fault.
C) strike-slip fault.
Which compound is least likely to be washed downward from the A horizon?
A) silicate minerals B) organic matter C) potassium crystals D) magnesium minerals
In general, life expectancy
A. rises with increased annual income, but only up to about $4000. B. bears no consistent relationship to annual income. C. is greatest among country peasants. D. rises with increased annual income.