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An important challenge for the U.S. economy in the future will be:

What is the definition of an ore?

X marks the site of oil drums that were illegally buried by the Shay-Dee Oil Corporation. These oil drums have begun leaking and the leaking oil has flowed downslope to the stream below, contaminating the stream. Which stream drainage basins would be affected by this oil?

Match zones A, B, and C with the zones of river proccesses:

GigaPan 3.) Find the lake at lower left. What kind of lake is this?

GigaPan 10.) Second question – Find the sediment circled in red. What is the origin of this sediment?

Metallic minerals are most commonly associated with what type of rock?

Which of the following locations experienced the highest temperature increase during the period from 1950-2014?

What is the sense of direction on this fault?

Match the water feature with the correct definition