El Niño is a period warming of sea-surface temperatures in the tropical Pacific off the coast of what country?
A) Venezuela
B) Mexico
C) Ecuador
D) Peru
E) Chile
Answer: D
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Which Central American country has established a system of reserves and national parks that, by 2008, has included about a quarter of its land, and is at the forefront of biodiversity conservation?
A. Nicaragua B. Costa Rica C. Panama D. El Salvador E. Honduras
Using the graphic map scale, estimate how far the slide moved across the valley floor of the North Fork Stillaguamish River from the bottom of the mountain side.
The question is based on Figure 38-8, a digital elevation model showing the 2014 Oso, Washington, landslide along the North Fork Stillaguamish River, and color Map T-26b in the back of the Lab Manual, showing a portion of the “Mount Higgins, Washington” quadrangle (scale 1:24,000; contour interval 40 feet); this same topographic map is reproduced in black-and-white as Figure 38-14. What will be an ideal response?
Since 1970 the rate of new discovery of oil that we can tap using available technologies has declined by ________
A) 75% B) 35% C) 65% D) 85% E) 55%
Similar in nature to a batholith but much smaller in size is a ________
A) dike B) sill C) vein D) stock E) flood basalt region