According to the theory of seafloor spreading, large quantities of molten rock rises up along
A) the mid-ocean ridges.
B) trenches that border continental margins.
C) atolls surrounding the Pacific volcanic rim.
D) subsiding divergent margins.
A
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The first Europeans to establish a regime in Africa South of the Sahara were the
A. British B. Portuguese C. Spanish D. French
In the process of creep, the velocity of the downhill movement of soil or rock is:
a. Extremely slow b. Moderately slow c. Moderately fast d. Very fast
This map shows contours of the water table, the location of four factories (labeled A, B, C, and D), and contaminated (x) and uncontaminated wells (-). Which factory contaminated the groundwater?
A. factory A B. factory B C. factory C D. factory D
Which of the following is the name for a thermometer that measures temperature and records it on a piece of chart paper?
A. minimum thermometer B. thermistor C. maximum thermometer D. thermograph