Oxidation of aluminum causes which of the following colors on the surfaces of rocks?
A) Light purple
B) Grayish-blue
C) Lime green
D) Black
E) Reddish brown
Answer: E
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Mafic rocks contain about ________% silica.
A. 50 B. 10 C. 80 D. 25 E. 65
Which of the following is not true with regards to the concept of niches?
a. A niche is the place where an organism lives. b. A niche is the general method by which an organism attains its energy. c. A species that is able to survive in a great range of environmental conditions and utilize a wide variety of food resources is a generalist species. d. The giant panda feeds almost exclusively on various types of bamboo. This being the case, these organisms are said to have a narrow specialized niche. e. In a rapidly-changing environment it is a great benefit to have a wide niche.
Pennsylvanian rocks have a characteristic cyclical deposition sequence of ____ and ____ sediments
called ____. a. shale, carbonate, varves b. marine, nonmarine, varves c. carbonate, shale, cyclothems d. marine, nonmarine, cyclothems e. none of the above
Neo-Malthusians argue that
A. We should never return to the conditions observed by Malthus in his day B. Malthus was wrong from the start C. Malthus could be useful today if reinterpreted D. Malthus's eighteenth century theories apply to similar circumstances today E. None of these represents the viewpoint of Neo-Malthusians