How did the Ural Mountains within the middle of the Eurasian plate form?
a) stresses from a distant plate boundary reactivated ancient faults
b) the continent is beginning to break apart along a line of hot spots
c) the area is presently a plate boundary
d) two continents collided, trapping the mountain within the new, larger continent
Answer: d) two continents collided, trapping the mountain within the new, larger continent
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a. Winds that drive water surplus or deficit b. Contrasts in water density c. Tidal effect d. Both a and b
In which of the following classes of organic compounds must every compound contain more than one carbon atom?
A) alcohols B) aldehydes C) carboxylic acids D) ketones
Which of the following are effects of the Green Revolution in East Asia?
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The polar high is characterized by cold, dry air
Indicate whether the statement is true or false