In 2008, gas and oil accounted for roughly______ of Russia's export earnings.

A. 2/3
B. 1/3
C. 2/4
D. 1/4


Answer: A. 2/3

Environmental & Atmospheric Sciences

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Individual restraints when using common-pool resources are necessary to prevent

A) increases in the maximum sustainable yield. B) the tragedy of the commons. C) a shift from productive to consumptive use of resources. D) shifts in the carrying capacity of natural populations.

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Where is the Hayward Fault, and why is it dangerous?

What will be an ideal response?

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Which of the following is true about the polarities of the C-O and O-H bonds?

A) Neither the C-O nor the O-H bond is polar. B) The C-O and O-H bonds are equally polar. C) Both bonds are polar, but the C-O bond is less polar than the O-H bond. D) Both bonds are polar, but the O-H bond is less polar than the C-O bond.

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What generates internal waves?

A) Wind energy B) Tidal energy C) Ocean currents D) All of these choices

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