Across
- 3. angular boulders that accumulate in a pile of a cliff or steep slope
- 4. decayed organic material in soil
- 5. the chemical weathering of minerals by a reaction with water
- 7. water solution that contains an excess of hydrogen
- 8. the dissolving of substances
- 10. a narrow shallow channel formed by water erosion on a slope
- 11. a chemical reaction that occurs when atoms or ions lose electrons
- 12. the removal of weathered materials from a place by agents
Down
- 1. the process by which one productive lands have become increasingly desert
- 2. a deep channel in sediment or soil caused by water erosion
- 3. the uppermost nutrient rich part of soil
- 6. a loose complex mixture of mineral grains on earth surface
- 9. the fracturing of rocks due to reduction of pressure