Which of the following best describes how levees impact wetlands?
a.
levees protect wetlands from destructive river floods.
b.
levees promote healthy wetland formation.
c.
levees prevent rivers from adding their sediment to wetlands.
d.
none of the above.

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)