Surface Map
At which of the following positions is falling pressure most likely observed?
A. 1
B. 1 and 2
C. 1, 2, and 3
D. 1, 2, 3, and 4
Answer: C
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John Wesley Powell put forward the idea of base level, which refers to
A) the amount of discharge in a particular reach of a stream. B) a level below which a stream cannot erode its valley. C) an evolutionary cycle of landscape development from fluvial action. D) the average height of a stream channel.
Which of the following has NOT been a compelling factor pushing rural people to migrate to cities in Latin America?
A) individual choices made by the young and the better educated to seek opportunities B) mechanization of agriculture decreased the labor needs in the countryside C) inability of the peasantry to gain ownership of arable farmland from the entrenched latifundia system D) conditions (educational access, drinking water, health care) are better in urban areas E) to take advantage of government funded programs encouraging people to migrate to large urban areas
The two most abundant gases in Earth's atmosphere are ________ and ________
Fill in the blank(s) with correct word
The segment of the atmosphere in which gases maintain an approximately uniform composition is the ________
A) homosphere B) exosphere C) ionosphere D) stratosphere E) troposphere