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Most of the important copper deposits in North and South America formed by:

The nation with the largest reserves of fossil fuel energy is:

Most of the important copper deposits in North and South America formed by:

The largest proportion of a typical barrel of crude oil goes to produce:

The vast majority of scientists believe that the intensity of the greenhouse effect is being increased by ____________, leading to global warming.

What does water moderate in a water-moderated nuclear power plant?

The year of maximum petroleum production in the US was:

Which of the following is not considered a drawback of hydroelectric energy production?

What is responsible for the large-scale global ocean circulation?

Chile has been the leading producer of copper worldwide for decades.  Describe how the geology of Chile is responsible for this economic fact.