Geologists regard basaltic magma (Hawaiian lava, for example) as the result of the partial melting of ultramafic rock in the ________.
A. inner core
B. oceanic crust
C. outer core
D. continental crust
E. mantle
Answer: E
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Some countries limit or reduce the overall amount of pollution by letting companies negotiate, buy, sell, and trade the "right" to pollute among themselves. Such a system is based on
A) emissions trading. B) ecocapitalism. C) pollution permits. D) barter bucks. E) pollute-for-profit.
Which of the following correctly matches the tectonic setting of a mountain belt with an example?
A) Subduction zone-East Africa B) Continental collision-Andes Mountains C) Mantle upwelling-Tibet D) All of these are correct. E) None of these are correct.
Which of the following is a secondary pollutant?
A) Lead B) Sulfuric acid C) Sulfur dioxide D) Carbon monoxide
Soil structure can be defined as which of the following?
A) blocky B) platy C) crumb or granular D) prismatic E) Crumb or granular, platy, blocky, or prismatic are all type of soil structure.