7.4

1. Coastal management involves people creating solutions and strategies to minimise the environmental effects that humans put into the coastal region.

2. Sea Walls- Used to stop erosion of the coastline and protect property.
Breakwaters- Constructed at all the entrances to rivers, they extend into the ocean in order to stabilise river entrances.
Groynes- Constructed along beaches to catch sand and make beaches wider.
Fences- To ensure adequate access to the beach while protecting the vegetation that stabilises the sand-dunes.

3.

Brief Description of management strategy	Advantages	Disadvantages
Sea Walls- Used to stop erosion of the coastline and protect property.	Helps protect coastal property and land with vegetation.	Does not look very nice and a scenic thing to see around a beach.
Breakwaters- Constructed at all the entrances to rivers, they extend into the ocean in order to stabilise river entrances.	Helps stabilise river entrances. Safe access for boating. Keep river entrances clear of sand-build up.	Alter the patterns of erosion, transportation and deposition of sand along the coastline.
Beach nourishment-Involves the movement of sand by machines.	Helps to keep beaches even with the amount of sand that is deposited.	Can be very expensive and needs to be ongoing.
Coastal Dune preservation-Strategies are implemented to protect these dunes which play a vital role in the coastal environment.	Keep the dunes safe from environmental impacts by humans.

4. Because many management techniques work hand in hand with some management strategies which make them more effective and useful.