To strip mine for coal, what must first be removed?

a. Acid drainage
b. Coal
c. Overburden
d. Ore


Answer: C

Environmental & Atmospheric Sciences

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The town of Thistle in Utah was submerged by a lake formed by

A) excessive rainfall. B) a dam formed by a lava flow from a volcano. C) a dam formed by a landslide. D) a human-made dam.

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What is Cretaceous-Tertiary boundary clay, and where did it form? Describe the conditions under which it formed, and what it looks like

What will be an ideal response?

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Which region would be most likely to produce a catastrophic landslide?

A) Old, eroded, worn-down mountains B) V-shaped stream valley with gentle slopes C) Flat-lying floodplains along a stream D) Steep, geologically young mountains

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In a single year, which of the following is the largest emitter of carbon dioxide into Earth’s atmosphere?

a. a single large volcanic eruption b. cement plants c. agriculture d. coal-fired power plants e. ground and air transportation

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