C.W.P for gateway 3

2. Gabions are built along a shore or behind a beach to prevent or reduce coastal erosion by weakening _____ energy.
3. Gabions are easily corroded by ________ and damaged by excessive trampling or vandalism hence it needs to be maintained regularly.
5. The coastal areas in Singapore are an important ________ and are greatly utilized.
7. Helps to break the force of oncoming waves.
8. Four-pronged concrete structures that helps to dissipate wave energy.
14. The 3 soft engineering measures are beach nourishment, planting __________ and stabilizing dunes.
15. Low walls that are constructed at right angles to the shore to retain sediments that might otherwise be removed due to longshore drift.
16. Natural _______ such as tsunamis can be disastrous to natural environments and human activities.
19. Coral reefs help weaken wave energy and serve as a breeding ground and nursery for ____.
20. Sand _____ can be stabilized by planting grasses.

1. __________ of a coastal area means controlling the development and change in the coastal zone according to agreed principles and criteria.
4. Seawalls are costly to build and maintain as constant repairs have to be made to prevent their ________.
6. __________ coastal resources is a management strategy that aims to prevent resources from being exploited or depleted.
9. ________ activities are activities that interrupt the functioning of natural systems.
10. Beach nourishment _____ down the erosion of beaches.
11. The roots of grasses anchor the _____ and prevent erosion.
12. East coast park is on _________ land.
13. Constructed to protect coastlines against wave attack by absorbing wave energy.
17. Gabions are wire cages usually filled with crushed ______.
18. A range of ____ and hard coastal engineering measures can be used to protect coastal areas.