Vegetation increases the swelling of soils
a. True
b. False
ANSWER: False
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Although the polar regions radiate away more heat energy than they receive by insulation in the course of a year, what prevents them from becoming progressively colder each year?
A. circulation of heat by the atmosphere and oceans B. release of latent heat to the atmosphere when polar ice melts C. conduction of heat through the interior of the Earth D. concentration of Earth's magnetic field lines at the poles
Crescent-shaped dunes formed where the amount of sand is outweighed by gravel and bedrock are
A) parabolic dunes. B) barchan dunes. C) transverse dunes. D) star dunes.
Biomes with permafrost usually ________
A) lack trees and are located in polar regions B) are in temperate zones and have deciduous trees C) are covered in coniferous forests at high latitudes D) are located at high altitudes nearest the equator
Position in the worldwide urban hierarchy depends less on size than on the global division of labor, corporate hierarchies, and access to world political and financial wealth
Indicate whether the statement is true or false