The most common mineral in Earth's crust is ________ and the second most common mineral is ________.
A. quartz; feldspar
B. olivine; feldspar
C. feldspar; quartz
D. silicate; carbonate
Answer: C
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If a 100-year floodplain was flooded in 2003, when should we expect the next 100-year flood?
a. ?2013 b. ?2053 c. ?2103 d. ?2104 e. ?at any time
The tectonic forces called slab pull and slab suction may act in unison at which type of plate boundary?
A) Convergent B) Divergent C) Intraplate D) Transform
How many angstroms can you fit in an inch?
What will be an ideal response?
The drastic reindeer population changes on St. Matthew Island appears to have ultimately been caused by
A) the absence of any predators. B) the addition of a keystone species. C) the narrow reliance of reindeer on just a single food species. D) the introduction of grizzly bears to the island in 1962.