The major rivers in the U.S., including the Colorado and Rio Grande, originate in mountainous regions with significant contributions from snow melt and then cross arid regions before supplying the water needs for several cities in the U.S
and Mexico. Discuss the potential impact of climate change on the water supplies.
If the climate becomes warmer, the snow melt could disappear or be greatly reduced and that would mean there would be no water in these rivers for extended periods of time. If the climate gets colder, there may be more snow if the supply of moisture to the mountains increases but there may be less snow melt because more water will go into glaciers. In either case, there is a possibility that large population centers would need to move or find alternative sources of water.
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The U.S. Department of Energy estimates that wind farms at favorable sites in North Dakota, South Dakota, Kansas and Texas
a. could meet the electricity needs of the western half of the United States, minus Alaska and Hawaii b. could meet the electricity needs of these four states, thereby reducing draw of electrical power from hydroelectric dams c. could meet the electrical needs of the northern plains states during the summers, but not the winters d. could more than meet the electricity needs of the lower 48 states e. could meet the electricity needs of the 48 states during the summers if air conditioning use in private homes was reduced
The land separating adjoining valleys is known a(n) _____.
a - gulley b - levee c - interfluve d - valley side e - rill
Sochi, Russia is a city on the ________
A) Baltic Sea B) Pacific Ocean C) Arctic Ocean D) Black Sea
Which of the following represents the proper sequence of these types of erosion, resulting from rainfall?
A) Gully erosion leads to splash erosion that contributes sheet erosion. B) Sheet erosion leads to gully erosion that contributes splash erosion. C) Sheet erosion leads to splash erosion that contributes to gully erosion. D) Splash erosion leads to sheet erosion that contributes to gully erosion.