At the 1997 rate of consumption, what year will the estimated 2,000 billion barrels of oil last?

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What weather variable is a direct result of the force of gravity on earth's atmosphere?

The central region of the United states is characterized by

Which of the following energy sources harnesses the power of waves? a. hydroelectric b. hydrokinetic c. wind d. geotherma

The most accepted theory about the origin of earth is that it formed by a process called planetary A-differentiation B-accretion C-condensation D-mixing

Which of the following is true about ecosystems?

1. When governments seek a favorable trade balance, they want A to raise taxes on exports B imports to equal exports C to export more than they import D to import more than they export

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3) Which of the following may move and cause an earthquake to occur? A: Asthenosphere B: Lithosphere C: Plate D: Mantle

What statement best describes the relationship between power and authority? A. Authority is a type of power used only in democracies. B. Authority is the ability to use power legitimately. C.