The phenomenon of desert expansion along the margins of semiarid and arid lands is known as
A) deflation.
B) desertification.
C) erosion.
D) permeability.
B
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All of the following are features of greenstone belts except
a. volcanic and sedimentary rocks. d. complex folding and faulting. b. key index fossil assemblages. e. pillow lava. c. granitic intrusions.
An ideal shelter for housing a temperature-measurement instrument should be painted ____
A) white B) black C) green D) yellow
When the nuclei of certain isotopes with large mass numbers (such as uranium-235) are struck by a neutron, they split apart into lighter nuclei and release energy. This is known as nuclear ____.
A. fission B. sequestration C. fractionation D. fusion E. liquefaction
What happens to the latitudinal pattern of temperature because of land-water contrasts?
A. Isotherms shift less over land than water. B. Warmest summer temperatures are on the ocean. C. Coolest summer temperatures are on land. D. Isotherms shift more over land than water. E. Coolest winter temperatures are on the ocean.