How would reducing the slope of a hillside help to stabilize it? What two methods can be used to
reduce a slope's angle?c What will be an ideal response?
Overloading and oversteepening by grading are common causes of slope failure, so reducing the angle
of the slope reduces the chance of slope failure. Two methods to reduce a slope's angle are cut-and-fill
and benching. In cut-and-fill, material is removed from the upper part of the slope and used as fill at
the base; this provides a flat surface for construction and reduces the slope. In benching, a series of
benches or steps are cut into a hillside. This reduces the overall average slope, and the benches can
collect small landslides or rockfalls.
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Which of the following best describes biocapacity?
A) Ecological footprint is independent of the Human Development Index (HDI). B) The wealthier nations are not affecting the world biocapacity. C) Continued economic growth by developing nations will further reduce planetary biocapacity. D) Ecological footprint should diminish as a nation's HDI increases.
Since 1980, a well-organized and well-funded movement has mounted a strong campaign to weaken or repeal existing U.S. environmental laws and regulations and to change the ways in which public lands are used.
Answer the following statement true (T) or false (F)
Air pressure differences from one place to another can have thermal and ____ causes
a. dynamic b. doldrum c. static d. geothermal e. ionic
All physical forms of water (solid, liquid, and gas) make up the
a. Atmosphere b. Geosphere c. Biosphere d. Troposphere e. Hydrosphere