What carved this U-shaped valley?
A) A rapidly downcutting river
B) A slowly downcutting river
C) Wind
D) Glacier
D) Glacier
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The primary cause of soil erosion is ________
A) no-till agriculture B) crop rotation C) strip cropping D) use of crop cover E) over cultivation
After the explosion of the Deepwater Horizon oil-drilling platform in 2010, Scientists estimate that BP removed about ________ of the oil, most of it recovered directly from the well, burned at sea, or skimmed by boats
A) 10% B) 25% C) 40% D) 75% E) 90%
Potential energy is ________ energy.
A. Stored B. Electrical C. Heat D. Latent E. Motion
Beverage container deposit-refund programs
A. are lobbied against by beverage manufacturers. B. reduce litter. C. encourage consumers to recycle beverage containers. D. All of these statements are correct.