Across
- 5. Periods that can cause water shortages.
- 6. An example of where water is lost to the system.
- 9. Loss of moisture from plants.
- 10. Seeping of water into soil.
- 11. A water store.
- 12. Collection of water by vegetation.
- 13. Capable of existing in the long term.
Down
- 1. The edge of a drainage basin (the boundary between two).
- 2. Periods of prolonged rainfall can cause this.
- 3. One of the world's most important natural resources.
- 4. cycle A closed and natural system.
- 7. Water entering the system through .............
- 8. Processes that move water through the system.
- 13. Where a river begins.