The internal temperature in the crust is:
a. higher than any other point in the earth because of the concentration of radioactive elements
b. lower than any other point in the earth because of its distance from the core
c. lower than the core, but higher than in the mantle
d. higher than the core, but lower than in the mantle
b
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The very common mineral shown in this photograph is light colored, transparent, and fractures rather than cleaves. What mineral is it?
A) Garnet
B) Quartz
C) Biotite
D) Muscovite
E) Feldspar
Which of the following greenhouse gases appears to be declining?
A. nitrous oxide B. carbon dioxide C. Chlorofluorocarbons (CFCs) D. methane
By 100 C.E., Rome had probably reached a population of
A) 50,000. B) 200,000. C) 300,000. D) 450,000. E) 500,000.
What large city in Quebec, divided into Upper Town and Lower Town, is a cultural and tourist center because of its cultural landscape filled with narrow cobbled streets, small shops, and Parisian charm?
A) Montreal B) Quebec City C) Ottawa D) Gatineau