Compared with other substances in the Earth system, air is considered to be ________ conductor of energy
A) an excellent
B) a better than average
C) an average
D) a poorer than average
E) a very poor
Answer: E
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Language revival—saving a language from extinction—is dependent upon all of the following except
A) evolution of its nonstandard words and phrases. B) improved status and public perception. C) growing numbers of speakers. D) government and institutional support.
Earth emits radiation with greatest intensity at ____ wavelengths
A) infrared B) radio C) visible D) ultraviolet
All of the following are warm currents, EXCEPT:
A. North Atlantic Drift. B. Gulf Stream. C. South Equatorial Current. D. Canary Current.
A stream begins at an elevation of 200 meters and flows a distance of 400 kilometers to the ocean. What is the average gradient?
a. 0.5 km/in b. 2 km/m c. 0.5 m/km d. 2 m/km