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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According to the planetary management environmental worldview, ____.
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
Heavy elements like Pb (lead) and U (Uranium) were generated ________
A) by the Sun and expelled to the solar system via the solar wind B) during the big band when the universe was formed C) during collapse of a star and subsequent nuclear synthesis in a supernova D) by humans in nuclear reactors
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
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.