OggaBooga

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Across
  1. 3. An aquatic ecosystem that has a thin layer of water over soil.
  2. 6. The proccess of one ecological community gradually chaning into another
  3. 7. The processof a water becomingnuitrent rich
  4. 8. A region along the coastline, where freshwater in rivers meets salt water in oceans
  5. 9. Underwater structure made from Coral.
Down
  1. 1. A stable community that no longer goes through major ecological changes.
  2. 2. The first species to colonize undisturbed land.
  3. 4. Ocean shore between the lowest low tide and highest high tide
  4. 5. The amount of dissolved salt in water.