________ is a calcium magnesium carbonate rock which dissolves almost as easily as limestone
A) Shale
B) Granite
C) Dolomite
D) Basalt
E) Gneiss
Answer: C
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A scientist identifies a rock sample as andesite. Why did he do so?
A) He observed that the rock has a lot of silica, making it mafic. B) He observed that the rock has a lot of silica, making it ultra-mafic. C) He observed that the rock has a decent amount of silica, making it intermediate. D) He observed that the sample has little silica, making it felsic.
The first comprehensive theory of continental drift was put forward by ________.
A) Darwin B) Köppen C) Wegener D) Wallace
What setting has the thinnest cover of sediment in the oceans?
A. oceanic trenches B. mid-ocean ridges C. continental shelves and slopes along passive margins D. abyssal plain
Despite many problems, since WWII steady efforts have been made toward European unification.
a. true b. false