7.4 Questions

7.4 Questions

1.    Coastal management is developing ways to protect the coastal environment and preserving it's ecosystem

2.    Sea walls, breakwaters and groynes

3.     

Description	Advantages	Disadvantages
Sea walls are walls that are constructed normal to replace foredunes	Protect property	Scenic appeal reduced
Breakwaters are walls constructed from rivers into the ocean	Stabilize rivers	Rapidly changes erosion, transportation and deposition patterns
Groynes are constructed at right angles to the shore	Stop build up from longshore drift	Sand accumulates to one side
Beach nourishment is the moving of sand by cranes	Evens out the beach and looks more natural	It is expensive and is very ongoing
Coastal dune preservation involves managing dunes	Helps to preserve natural wonder of area	Requires extensive effort

4.    It is necessary to use a variety of techniques because because usually the problem requires several strategies as well as strategies to try and reduce the impact on the environment.

5.     

A.   Breakwaters

B.   Coastal dune preservation

C.   Beach nourishment

D.   Sea wall