Which wave travels at the speed of light?
A. radio wave.
B. sound wave.
C. both the same
D. none of the above
Answer: A
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The greatest surface warming is projected for which of the following regions during the next 100 years?
A. polar regions B. tropics C. middle latitudes D. equator
If the average temperature of the sun increased, the wavelength of peak solar emission would:a
shift to a shorter wavelength. b. shift to a longer wavelength. c. remain the same. d. impossible to tell from given information
Constraints to FDI include all of the following EXCEPT
A) tax restrictions in foreign countries. B) fluctuating currencies. C) differences in government policies. D) cultural differences. E) differences in laws.
The area of high ground that separates one valley from another and directs sheetflow is known as
A) a drainage divide. B) an interfluve. C) the continental divide. D) the maximum contour elevation. E) rill.