Why are levees problematic approaches to controlling flooding?
What will be an ideal response?
Levees reduce upstream flooding, but can lead to flooding downstream. They eliminate the aquatic habitats that lie along a meandering stream. They also do not protect against unusually high and powerful floodwaters that overtop the levees.
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Set of changes caused by the multiplier effect include all of the following EXCEPT
A) direct effects. B) indirect effects. C) induced effects. D) all of the above E) direct and indirect effects only
What makes Europa the most likely place life will be found in our solar system?
A. It has a hydrogen ocean and moderate levels of oxygen in its atmosphere, which is gradually producing water through frequent lighting strikes. B. It has an ocean of liquid water, and there is increasing evidence of phytoplankton activity, particularly as shown by ongoing spectral analysis. C. Actually, Io is the most likely place to find life, due to its high level of volcanic activity. D. It has an ocean of liquid water, which is warmed by tidal force interaction with Jupiter, and may house underwater volcanic thermal vents.
Why is there sometimes wire mesh covering a steep slope? What are the characteristics of the type of
mass wasting this is meant to prevent? What will be an ideal response?
By design, the molecules that resist biodegradation and include some of the most problematic persistent organic pollutants are the
A) synthetic organic compounds. B) inorganic compounds. C) recycled organic compounds. D) chlorinated heavy metals.