The greenhouse gas produced from most landfills is ________
A) methane
B) ozone
C) water vapor
D) carbon dioxide
E) nitrogen
Answer: A
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Which of the following types of radiation might be best for medical imaging?
A. Gamma radiation would be best because it penetrates the best. B. Only X-rays are used for medical imaging. C. Alpha radiation would be best because it penetrates the least and therefore does the least damage. D. Beta radiation would be best because it can be measured electrically. E. none of the above
Which of the following features is associated with a deep oceanic trench?
A) Midocean ridge B) Linear island chain C) Seamount D) Island arc
There are significant differences in the leading causes of death between developed and developing regions of the world. The biggest difference is in the category of frequency of ________
A) lung diseases B) E. coli illnesses C) cancer D) cardiovascular diseases E) childhood diseases
Two-thirds of business and professional service jobs in the U.S. are located in
A) the suburbs. B) New York City. C) large urban areas. D) dispersed medium-sized cities. E) California.