A mineral that has two prominent directions of cleavage that form angles of 56 and 124 degrees with each other is:
a. orthoclase feldspar
b. augite (pyroxene)
c. hornblende
d. galena
c
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The mountain building events of the west coast that began in the Jurassic and continued into the Cenozoic are
collectively called the ____. a. Sonoma orogeny b. Antler orogeny c. Cordilleran orogeny d. Rocky Mountain orogeny e. Alleghenian orogeny
In addition to their role in depleting stratospheric ozone, ________ are also effective greenhouse gases
A) nitrous oxides B) primary pollutants C) cholorofluorocarbons D) volatile organic compounds
Insolation is ____
a. incoming solar radiation b. a condition in which the sun's rays are at 90o c. the spectrum of visible light d. the maximum angle of the sun at noon
Why did the number of women decline from 1951-2011 in the region?
A) female feticide B) infant mortality C) preference for male children D) all of the above E) none of the above