In percolating rainwater, dissolved gases and the decay products of local vegetation increases the water's capacity to ______.
a - condense
b - evaporate
c - freeze
d - drive chemical reactions
e - undergo mechanical weathering
d - drive chemical reactions
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Diffraction of light in the shadows of a razor blade is more pronounced for relatively
A. shorter wavelengths. B. shorter or longer wavelengths. C. longer wavelengths. D. none of the above
Which of the following statements is TRUE about the political geography of Iraq?
A) Kurdish separatists dominate the northern third of Iraq while Sunni Arabs dominate the
remainder of Iraq
B) southern Iraq is dominated by separatist Kurdish nationalists, while northern Iraq is
largely dominated by Sunni Arabs
C) Sunni Arabs dominate southern Iraq while Shi'ite Arabs dominate northern Iraq
D) Kurdish separatists dominate the northern third of Iraq while Sunni Arabs dominate the
central and western part of Iraq, and Shi'ite Arabs are most numerous in the southern half
of the country, south of Baghdad
E) Kurdish separatists dominate the northern third of Iraq while Shi'ite Arabs dominate the
remainder of Iraq
Earth vorticity
A) is greatest at the Equator. B) does not affect absolute vorticity. C) is a function of latitude. D) is vorticity relative to the earth's surface.
Photochemical smog differs from industrial smog in that it ________
A) is an unhealthy mixture of pollutants B) is primarily composed of carbon monoxide C) consists of primary pollutants D) is formed only in the presence of sunlight E) has large quantities of soot