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Across
- 4. A flat area where a river splits into smaller rivers before entering the sea
- 6. An underwater structure built by tiny sea creatures
- 7. An imaginary line around the middle of the Earth
- 8. A sheltered area of water where ships can dock safely
Down
- 1. One of the large bodies of salt water covering most of Earth
- 2. A very small town in the countryside
- 3. A round model of the Earth
- 5. A nation with its own government and borders