According to Ethnologue, a language is considered to be ________ if the only fluent people are older than ________ age. A language is considered ________ if it ceases to be used by people in daily activities
A) dying, 50 year of, endangered
B) dying, child-rearing, extinct
C) extinct, 50 year of, extinct
D) extinct, child-rearing, endangered
E) endangered, 50 year of, dying
Answer: B
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Microbursts
A) are never accompanied by rain, and are only associated with dust storms. B) occur in the early stage of thunderstorms when latent heat release is maximized. C) normally display a "starburst" (radial) damage pattern from rotating winds. D) are characterized by strong updrafts that can cause airplanes to crash.
Isostatic columns of crustal material produce equal pressures deep within the mantle.
Answer the following statement true (T) or false (F)
In the soil profile below, iron is present in both the top and bottom later, as labeled, but why is only the second layer a reddish color?
A. The iron oxide was leached from the top layer in what was most likely an arid environment. B. When exposed to air, the iron oxide loses its reddish tint in what was most likely a wet environment. C. The iron oxide was leached from the top layer in what was most likely a wet environment. D. When exposed to air, the iron oxide loses its reddish tint in what was most likely an arid environment.
Which of the following describes the light reflecting and transmission characteristics of a mineral?
A) virtual absorption B) luster C) color streak D) fluorescence