Environment - Aquatic

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Across
  1. 2. Process of sediment build-up
  2. 5. Sand wave
  3. 6. green without roots and leaves
  4. 8. on the beach
Down
  1. 1. the animals of a particular region
  2. 3. hard ocean stone
  3. 4. effect of moon on ocean
  4. 7. great depths of the oceans