A very strong earthquake recorded in North America was the intraplate quake known as the ____ earthquake
A)1811 New Madrid
B)1886 Boston
C)1906 San Francisco
D)1964 Anchorage
E)1984 Mount St. Helens
A
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Heavy metals can quickly move through ecosystems because they
A) are soluble in water as ions and as a few other compounds. B) quickly dissolve in the fats of animals. C) quickly become incorporated into sugars and starch. D) easily clump together and bind tightly to soil compounds.
Where has mining been especially important to the Rocky Mountains' economy in both Canada and the United States as compared to lumbering?
What will be an ideal response?
Migrating mid-latitude anticyclones typically
A. move westerly driven by the prevailing westerlies. B. move easterly driven by the prevailing westerlies. C. move easterly driven by the prevailing easterlies. D. move westerly driven by the prevailing easterlies.
What disease wiped out one-quarter of Europe's population around 1350?
A) bubonic plague B) influenza C) malaria D) measles E) smallpox