Vegetation tends to increase slope stability by
A. adding water to the soil.
B. holding rainwater on the surface.
C. removing weight from the slope.
D. holding soil in place with roots.
Answer: C
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A. we have an ethical responsibility to be good stewards of the earth B. our resources are limited and should not be wasted C. we should manage nature to meet our needs D. our primary focus should be on preserving the environment E. our success depends on learning how nature sustains itself
The casualties from the 2011 Christchurch, New Zealand earthquake is a representative example of the
human loss being dispersed throughout the city. Indicate whether the statement is true or false.
Heavy elements like Pb (lead) and U (Uranium) were generated ________
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Which of the following is most similar in volume to an acre-foot of water?
A. 9 football fields covered with one-tenth of a foot of water B. a square mile covered with 1 foot of water C. an acre covered with 3 feet (1 meter) of water D. 20 million gallons