What two 19th century technologies were key to encouraging settlement in the Great Plains?
A) Automobiles and the steel plow.
B) The railroad and the automobile.
C) The automobile and the airplane.
D) The steel plow and the railroad.
D
Environmental & Atmospheric Sciences
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The accomplishments of the United States Exploring Expedition are largely unknown with little evidence
remaining of the voyages. a. True b. False
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Since the Earth has density stratified layers, which layer would be the densest?
A) The outer core B) The mantle C) The inner core D) The crust
Environmental & Atmospheric Sciences
Early post-World War II cooperation in Western Europe centered on transportation
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Which of the following molecules is best described as having a nearly tetrahedral distribution of electron density?
A) BeCl2 B) OF2 C) SnCl2 D) none of these
Environmental & Atmospheric Sciences