Which layer in the earth is similar in composition to basalt, a dark lava rock?
a) continental crust
b) oceanic crust
c) upper mantle
d) lower mantle
e) core
Ans: b) oceanic crust
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Responsible stewardship in the coming decades will require global energy policies that promote
A) both sustainability and technological efficiency. B) productivity and economic prosperity in developing nations. C) the development of abundant and inexpensive fossil fuels such as shale gas. D) additional exploration of shale oil and natural gas resources.
What is the innermost layer of the atmosphere, extending 17 kilometers above sea level at the tropics and about 7 kilometers above the earth's North and South Poles?
A. troposphere B. stratosphere C. hydrosphere D. geosphere E. biosphere
A "paradox of plenty" or __________ __________,occurs when a countrywith an abundance of natural and valuable resources often experiences lower economic growth than a country without these resources
Fill in the blank(s) with correct word
Energy conservation in the United States ________
A) can be achieved through personal actions and more efficient technologies B) can be accomplished only through changes in technological efficiencies C) is unlikely to ever occur D) becomes more difficult during times of war E) can be accomplished by changes in tax laws