| 11. | Land degradation by stock grazing has reduced numbers of burrowing seabirds.
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| 12. | Mounds are not constructed in undisturbed regions where land degradation has not occurred.
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| 13. | Vegetation shifts from non-poisonous to poisonous plants seem to correlate with increased land degradation.
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| 14. | This is exacerbated by land degradation and impervious urban areas.
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| 15. | High population density is not always related to land degradation.
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| 16. | This economic analysis will enable decision makers to take appropriate measures combat land degradation globally.
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| 17. | The country also faces land degradation after forests stripped for agriculture resulted in soil erosion.
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| 18. | Land degradation is an important factor of internal displacement in many African and Asian countries
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| 19. | In " Land Degradation and Society " ( 1987 ) the approach received further development.
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| 20. | Continued land abuse during droughts, however, increases land degradation.
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