How does the formation of a hanging valley differ from the formation of the main glacial trough?
What will be an ideal response?
Answer: There's no difference in process—it's all erosion—but the tributary glacier that forms the hanging valley is smaller than that in the glacial trough.
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Which of the following are benefits of aquaculture?
A. high yields, less waste output, and high profits B. use of small amounts of feed, high profits, and high yields C. high profits, high yields, and reduction of the overharvesting of some wild fish D. high profits, resistance to disease, and less waste output E. reduction of the overharvesting of some wild fish, less waste output, and high profits
If we divide Earth's current proven oil reserves by current annual consumption of about 26 billion barrels, we see that we have about ________ years of oil supply remaining, at present rates of consumption
A) 15 B) 30 C) 50 D) 80 E) 130
The scientific method is
A. limited in when it can be used. B. impartial. C. reliable. D. All of these are correct.
The only form of commercial agriculture that is an extensive agricultural pursuit is
A) mixed crop and livestock farming. B) grain farming. C) cattle ranching. D) Mediterranean cropping. E) horticulture and fruit farming.