Chain Crosswords Long Geography Medium — Set 21

Medium 13×13 Set 21
1
2
3
4
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8
Across
  1. 4. A flat area where a river splits into smaller rivers before entering the sea
  2. 6. An underwater structure built by tiny sea creatures
  3. 7. An imaginary line around the middle of the Earth
  4. 8. A sheltered area of water where ships can dock safely
Down
  1. 1. One of the large bodies of salt water covering most of Earth
  2. 2. A very small town in the countryside
  3. 3. A round model of the Earth
  4. 5. A nation with its own government and borders