Which of the following best represents the sequence by which a continent splits apart?
A. continental rifting, then seafloor spreading, then uplift due to mantle upwelling
B. seafloor spreading, then continental rifting, then uplift due to mantle upwelling
C. uplift due to mantle upwelling, then continental rifting, then seafloor spreading
D. None of these choices are correct.
Answer: C
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a. a meteorite impact b. a sudden appearance of fossils c. a sudden extinction d. the start of evolution e. volcanism that created the Ring of Fire
Discuss the differences between rapid and slow mass movements
Which of the following lists of metamorphic rocks places the rocks in order from lowest metamorphic grade to highest?
A) Gneiss, slate, phyllite, schist B) Anthracite, hornfels, quartzite, marble C) Slate, phyllite, schist, gneiss D) Ironstone, sandstone, slate, gneiss
The Soviet Union's command economy system was an unqualified failure due to inefficient and unwieldy processes
a. True b. False Indicate whether the statement is true or false