| 1. | This natural erosion partly uncovered these mineable mines to extract the black coal.
|
| 2. | This unusual geographic feature is a result of natural erosion of the surrounding prairie.
|
| 3. | To prevent excessive nail growth, regular trimming can take the place of natural erosion.
|
| 4. | The bizarre form and many cavities are caused by natural erosion over thousands of years.
|
| 5. | The natural erosion continues to this day and threatens the soft sand banks of the waterway.
|
| 6. | To further contributed to the destruction of the castle was the natural erosion of the sandstone rocks.
|
| 7. | Natural erosion, abetted by spotty maintenance of the cistern, has caused occasional collapses of the buildings above.
|
| 8. | What we saw were uniform horizontal layers of sedimentary rocks, undisturbed except by the processes of natural erosion.
|
| 9. | She concluded that in addition to natural erosion, human activities including deforestation, agriculture and urbanization accelerated the process.
|
| 10. | In addition to the varied land interests at stake, vandalism, natural erosion and other factors are working against conservationists.
|
