Across
- 5. Portion of land drained by a river and its tributaries
- 9. A non-living organism
- 11. extends from the surface to 200 meters
Down
- 1. water collected on the surface of the ground
- 2. Water that is safe to drink
- 3. different positions in the food chain
- 4. breaks down organic material
- 6. Tide meets the stream
- 7. how plants and animals are connected
- 8. an organism biological community/ environment
- 10. water held underground