The relationship between recycling, economics, and energy consumption is demonstrated in the case of aluminum, where ________
A) all of the metal recycling industries in the United States went bankrupt by 2009
B) the U.S. failure to recycle aluminum has caused energy to be lost in mining new ore
C) it costs more than 10 times as much to produce items from recycled aluminum than from virgin ore
D) new cheap mining technologies and huge newly discovered aluminum deposits have made recycling unprofitable
E) it requires over 20 times more energy to mine and extract aluminum from bauxite ore than from recycled materials
E
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In 2002, after years of Portuguese and then Indonesian occupation, _________ became independent with UN help.
A. Irian Jaya B. Papua New Guinea C. East Timor D. The Moluccas
Mercator maps show the greatest amount of distortion in the ____
a. Eastern Hemisphere b. Atlantic Ocean c. middle latitudes d. equatorial regions e. polar regions
Which one of the following stress situations results in folding of flat-lying, sedimentary strata?
A) horizontally directed; extensional stresses B) vertically directed; extensional or stretching stresses C) vertically directed; compressional stresses D) horizontally directed; compressive stresses
The mineral gold (Au) is very soft. Gold's softness can be attributed to
A) large, tightly packed atoms. B) small, loosely bonded atoms. C) large, loosely packed, and loosely bonded atoms. D) large, closely packed, and strong bonded atoms.