Wind is included along with gravity, water, and ice as an agent of erosion. In many national parks and other areas of natural beauty, statements are often made that credit wind as having sculpted the landscape
Briefly discuss the importance of wind as an agent of erosion and explain why such statements are probably geologically inaccurate.
Wind itself is not an agent of erosion, it is only when sand is borne on the wind that rocks are shaped by this sand, rather than the wind itself. This is also true in most cases with water in that water is the medium for transportation but not the eroder typically. The major difference between wind and water as agents of erosion is that wind can seldom lift sand more than a couple of meters into the air and it cannot carry it far as an airborne load. As a result, wind will only be effective very close to the ground so it will not sculpt large features.
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Which vegetation type found in the Russian Federation represents a cold-resistant, coniferous forest?
A) steppe B) tundra C) taiga D) volga E) none of these
This is a sovereign state that comprises an urban area and the surrounding countryside.
A) rural-state
B) nation-state
C) city-state
D) primate-state
E) homogeneous state
Root causes of unsustainability include all of the following except
a. wasteful use of resources b. Poverty c. rapid population growth d. inclusion of environmental and social costs in market prices e. widespread recycling programs
Which of the following is NOT one of the ways trees help to stave off desertification?
a. Reduction in the reflectance of solar energy hitting the earth b. Transpiration of water into the atmosphere c. Biological weathering by the tree roots d. Serving as natural windbreaks e. Pumping deep groundwater with their roots