The U.S. and Canada account for what percentage of total world exports of wheat?
A) 10%
B) 25%
C) 35%
D) 50%
E) 75%
D
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Composite volcanoes erupt explosively. What kind of magma do you conclude that composite volcanoes must contain?
A. ancient magma B. magma that is mostly liquid C. thick, sticky magma rich in solids and gas D. magma made of cement
What system involves free markets with minimal government intervention?
A) bordeaux B) coup d'etat C) laissez faire D) placido E) torreon
Stream-eroded valleys are V-shaped, whereas glacially-scoured valleys are U-shaped
Indicate whether the statement is true or false
The New Madrid earthquakes of the early nineteenth century were some of the largest in American history. At their greatest, they caused buildings and bluffs to collapse, caused land subsidence, and displaced parts of the Mississippi River
Could another earthquake of this magnitude happen near New Madrid again? Explain how the earthquake devastation today would compare to that of the early nineteenth century. What will be an ideal response?