Cordilleran orogenic activity is a result of a continental-continental collision between the Farallon and North
American plates.
a. True
b. False
False
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Diamond can cut through quartz. What does this suggest?
A) Quartz is very weak. B) Diamond is very strong. C) Quartz is somewhat weak and diamond is somewhat strong. D) Both are very weak but diamond is only a bit strong.
The most important current for promoting water exchange among all three oceans is the: a. Gulf Stream
b. South Pacific Gyre. c. Arctic Convergence. d. Antarctic Circumpolar Current.
On average, what percentage of solar energy striking the outer atmosphere eventually reaches Earth's surface?
a. ?5 percent b. ?15 percent c. ?30 percent d. ?50 percent e. 70 percent?
Since the beginning of the Industrial Revolution, the increased flux of carbon into the atmosphere has been primarily because of ________
A) desertification B) addition of phosphate in detergents C) deforestation D) addition of fertilizers to the soil E) burning of fossil fuels