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Unformatted text preview: y straighten rivers and dam them up, but nature
always fights back: dams fail or the reservoirs behind them fill with sediment and require constant dredging;
seawalls erode and collapse under the constant assault of waves; rivers prefer to meander, so they tend to break
out of straight, engineered channels through erosion.
Naturalists prefer to work with, rather than against, nature. They give a river “room” to meander and
reduce the risk of flood damage by limiting development to outside the river’s floodplain. They plant or
preserve trees along the riverbanks to slow the rate of erosion and provide shade for aquatic species. Nature is
a powerful force; it is constantly at work, and while our short bursts of work may be more intense, and the use
of energy from oil can magnify our efforts, eventually Nature will win because it has limitless time. How did
streams cut through mountains to create water gaps? How did ancient mountains almost completely erode
away? In “The World Without Us”, Alan Weisman (2007) describes what would happen to our cities,
buildings, and infrastructure if huma...
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This note was uploaded on 01/08/2014 for the course SUST 510 taught by Professor Marker during the Fall '14 term at Black Hills State University.
- Fall '14