_________ were peasant soldiers of the steppes who originally were runaway serfs and other fleeing from the rule of the tsars
Fill in the blank(s) with correct word
Cossacks
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Which of the following statements describes a region where tree growth is not possible?
A. Annual precipitation is 500 mm or less. B. Average monthly temperatures are sometimes less than 0°C. C. Average monthly temperatures never exceed 10°C. D. Evaporation exceeds total annual precipitation.
Tuff and volcanic breccia are both composed of a variety of igneous fragments. Their classification as either felsic, intermediate, or mafic therefore depends on the particular
A. thickness of each individual unit. B. mineral content of each individual unit. C. average grain size of each individual unit.
One study estimated that the United States has enough wind power potential to produce ____ times its current electricity needs.
A. 2-3 B. 5-10 C. 16-22 D. 36-42 E. 46-52
Define a reverse viewshed analysis.
What will be an ideal response?