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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What reasons cause the downwelling and upwelling of ocean water?
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
The polar high is characterized by cold, dry air
Indicate whether the statement is true or false
Which of the following are effects of the Green Revolution in East Asia?
A) excess nitrogen in waterways B) illness caused by herbicides C) adoption of genetically modified organisms (GMOs) D) illness caused by herbicides and adoption of genetically modified organisms (GMOs) E) all of the above