The formation of the Rocky Mountains began about 200 million years ago with the collision of the North American Plate and that other plate?
A) The South American Plate
B) The Pacific Plate
C) The Juan de Fuca Plate
D) The Caribbean Plate
B
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Which side of this molecule has a negative charge?
A. 1 B. 2 C. 3 D. All of these choices are correct. E. None of these choices are correct.
Thin, wispy clouds blown by high winds into long streamers, called mare's tails, are ____
A) stratus B) cirrocumulus C) altostratus D) cirrus
What is a problem with power generated by wind or sun?
A) It can create power surges that endanger the power grid. B) governments rarely give tax subsidies to renewable energy industries C) It results in extensive disruption of local power sources. D) Energy cannot be transferred from sunny or windy areas to other areas. E) It requires constant sun or wind.
Which free-trade agreement is themost important in the Americas??
a. Southern Cone Common Market
b. Mercosur
c. NAFTA
d. FTAA
e. Organization of American States