Of which of the following minerals does South Africa NOT lead the world in production?
A) platinum
B) vanadium
C) chromium
D) iron
D
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Which of the following terms describes a phenomenon in the Atlantic Ocean that is similar to the Southern Oscillation?
A. Asian monsoon B. North Atlantic Oscillation C. Gulf Stream Oscillation D. Florida sea breeze convergence front
Which of the following decades had the highest average global temperature?
A) 1900-1910 B) 1940-1950 C) 1960-1970 D) 1980-1990 E) 1990-2000
Given the calculation: (7.22 x 10^-3 ) x (6.4 x 10^7 ) = ? What is the answer reported to the correct number of significant figures?
A) 4.6 x 10^5 B) 4.62 x 10^5 C) 4.620 x 10^5 D) 4.6208 x 10^5
In the oceans, place-to-place differences in water temperature and other characteristics are most prominent ________
A) at the bottom B) at depths below a few hundred meters C) near the surface D) in tropical latitudes E) in polar latitudes