What is a common rock that can be dissolved by water and weak acids?
A. quartz-rich sandstone
B. quartzite
C. limestone
D. All of these choices are correct.
Answer: C
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What is the main difficulty in trying to eliminate chlorinated fluorocarbons from the atmosphere?
A. They are very stable and take a long time to decompose completely. B. They do not absorb ultraviolet radiation. C. They are too light and blow away. D. all of the above E. only a and b
Briefly explain the concepts of "slab-pull" and "ridge-push."
The Great Migration significantly expanded cities north of the ________
A) Mississippi River B) Mason Dixon Line C) Great Lakes D) Ohio River
Which type of volcanic material will dominate the eruptions along a continental volcanic arc?
A) Mafic lavas B) Lavas of intermediate or felsic composition C) A mix of felsic and ultramafic lavas D) Felsic lavas