11. This process began with a period of land clearing , or logging. 12. It is threatened by habitat loss caused by land clearing for agricultural purposes. 13. The original habitat is mostly destroyed by land clearing and housing. 14. Intermediates have been associated with land clearing for agriculture in southern Western Australia. 15. They are threatened by habitat loss ( land clearing , forest fires ) and predators. 16. Some land clearing for cattle grazing conducted in the early 20th century has occurred. 17. This covers land clearing , management of constructionwaste, and use of materials and energy resources. 18. Past estimates already rated Australia as the sixth highest land clearing nation on earth, 19. Recent land clearing outside town limits may affect the population. 20. Other impacts include land clearing for agricultura, overexploitation, and pollution.
