Across
- 5. four-pronged concrete structures
- 6. encouraging coral reef _____
- 10. eg mangroves, to help stabilise coastlines (2 words___-___)
- 12. put a limit on; control
- 15. constructed to protect coastlines against wave attack by absorbing it
- 17. one of the orange words in solf engineering measures (dunes)
- 19. low walls constructed 90 ° to the shore
- 20. help to break the force of oncoming waves
Down
- 1. reduce
- 2. Able to be maintained at a certain rate or level
- 3. _____ reef
- 4. to prevent resources from being destroyed
- 7. means controlling the development and change
- 8. using sand from an external source to replenish the sand on a depleted beach (2 words____-___)
- 9. construction of physical structures to protect coast (2 words____-____)
- 11. wire cages usually filled with crushed rocks
- 13. a alleviate the problem of land shortage
- 14. protecting the coast using natural processes (2 words_____-_____)
- 16. a beach found at the east of Singapore(3 words joint together)
- 18. a natural hazards related to water