The former Soviet Union was comprised of how many different republics?
A) 15
B) 13
C) 12
D) 16
E) 14
A) 15
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Hawaiian-style eruptions only occur in Hawaii and other Pacific Islands. Indicate whether the statement is true or false
How is groundwater flow primarily controlled?
a.) through the water table b.) by the surrounding rocks c.) by gravity d.) by the location of streams at the surface
What does the following element description actually mean? hydrogen-2
A) a hydrogen with one neutron and one proton B) a hydrogen with two neutrons C) a hydrogen with two protons D) a molecule of hydrogen gas E) two hydrogen atoms
Which of the following is NOT true regarding the production of corn-based ethanol as an alternative to gasoline in the United States?
A. it is less energy efficient than gasoline B. production requires a significant amount of farmland C. it is helping to drive up food prices D. production likely results in a net energy loss E. provides a long-term solution to our energy needs