Permafrost occurs in what kind of climate?
A) Dfa
B) Csa
C) ET
D) Aw
Answer: C
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The most commonly spoken language in Haiti is
A) Spanish B) English C) French Creole (patois) D) French E) Dutch
Why can seawater hold many times more carbon dioxide than either nitrogen or oxygen at saturation?
a. Carbon dioxide is not used in photosynthesis. b. Carbon dioxide is used in mineral formation. c. Carbon dioxide combines chemically with water to form carbonic acid. d. Carbon dioxide is more reactive. e. Carbon dioxide is used by plankton for energy
Which term describes the vertical circulation of energy in a fluid such as air or water?
A. advection B. conduction C. convection D. emission E. refraction
In terms of volume and weight, the largest branch of the extractive industries is ________.
A. fossil fuel minerals B. fertilizers C. metallic minerals D. earth materials