Across
- 1. An increase in the number of people living in central partos of cities.
- 4. Zone which contains functions as shops, entertainment and offices
- 5. When the water soaks into the ground and goes through it.
- 6. The alternate rising and falling of the sea
- 8. Coastal water body where fresh water from rivers and streams mixes with salt water from the ocean
- 10. plain The flat land besides the river
- 11. The dividing line between one river basin and the next.
Down
- 2. Smaller rivers that join a bigger one
- 3. process in which water runs down the slope to the river.
- 4. The point where two rivers join.
- 7. An area with higher land on each side.
- 9. Where a river starts.