Solve these clues to fill the grid.
- Condition in which the earth's surface is worn away by the action of water and wind
- 5 Across
- The configuration of a surface and the relations among its man-made and natural features
- 6 Across
- The erosion of soil as a consequence of sand and dust and loose rocks being removed by the wind
- 9 Across
- A noticeable deterioration in performance or quality
- 1 Down
- Using ___ or tools or devices
- 2 Down
- The part of the earth's surface consisting of humus and disintegrated rock
- 3 Down
- The breakdown or alteration of rock at or near the surface of the Earth.
- 4 Down
- Someone unpleasantly strange or eccentric
- 7 Down
- The occurrence of surplus liquid exceeding the limit or capacity
- 8 Down