From the discussions of demographic changes within the United States we can deduce that the largest level of interregional migration in the United States was caused by the
A) arrival of Europeans and their wars with Native Americans beginning in the 1600s.
B) unauthorized immigration from Latin America, especially in the 1900s.
C) immigration of Asians beginning in the early twentieth century, despite the Chinese Exclusion Acts.
D) opening up of the western territories to settlement.
E) industrial development in the northeast, particularly at the outset of the Industrial Revolution.
Answer: D
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Atmospheric nitrogen can be used directly by multicellular plants and animals.
Answer the following statement true (T) or false (F)
Cinder cones are composed primarily of
A) ejected fragments of vesicular lava. B) blocky lava flows and lahar deposits. C) pahoehoe and/or aa. D) volcanic ash.
Sediments are classified as:
a. detrital, clastic, and chemical. b. detrital and clastic. c. detrital and chemical. d. particulate and crystalline. e. organic, particulate, and crystalline.
The permanent removal of water from its source is known as consumptive use
Indicate whether the statement is true or false