________ is a hard, compact, very fine-grained sedimentary rock composed entirely of silica.
A. Claystone
B. Chert
C. Tuff
D. Chalk
E. Travertine
Answer: B
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Abbreviated term for Hominidae, the family that includes bipedal primates such as
Australopithecus and Homo:a. hominoid d. Neanderthal b. hominid e. Cro-Magnon c. anthropoid
The unit of pressure most commonly found on a surface weather map is
a. inches of mercury. b. millibars or hectopascals. c. pounds per square inch. d. atmospheres. e. torr.
Undernourished parents often raise children who are undernourished because the parents
A. Do not have access to the information about nutrition. B. Cannot afford to feed their children properly. C. Transfer genetic deficiencies to their children. D. Do not know any better. E. All of these are reasons for the vicious cycle.
The benefits of hydraulic fracturing—"fracking"—include
A) opportunities for economic development and a sense of energy independence. B) the lack of environmentally problematic waste products. C) environmentally sustainable oil and gas extraction processes. D) a sustainable source of cheap energy. E) both that it is a sustainable source of cheap energy and it is environmentally sustainable oil and gas extraction process.