The ________ represents a pattern in the Pacific Ocean in which two primary nodes of sea surface temperature exist
Fill in the blank(s) with the appropriate word(s).
Answer: Pacific Decadal Oscillation (PDO)
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Which of the following would most likely have the greatest impact on the ocean conveyor system in the Atlantic Ocean?
A) Doubling the size of the Panama Canal B) Increased volcanic activities in the Pacific Ocean C) Complete melting of the polar ice cap D) Doubling the number of ships that cross from North America to Europe using fossil fuels
A(n) __________ __________ is used by rebel movements or their allies to finance conflict aimed at undermining legitimate governments
Fill in the blank(s) with correct word
According to the 1986 Immigration Reform and Control Act, undocumented immigrants were
A) permitted to become legal residents by participating in an application process. B) automatically transformed into U.S. citizens in a blanket "amnesty." C) encouraged to remain in Mexico because of shortages of workers. D) no longer eligible for public services in the United States. E) established as guest workers following the German model.
The U.S. population center of gravity has shifted
A) north to south. B) south to north. C) east to west. D) west to east. E) It is static.