Ecology L5 2

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Across
  1. 3. a mitigation method for assisting eels to go over impoundments
  2. 8. ecology that looks at the interaction of populations of the species living within a particular area
  3. 11. the boundary between water at two different temperatures
  4. 14. zone of shore that is permanently submerged
Down
  1. 1. least toxic part of total ammonia
  2. 2. native crayfish found in UK rivers
  3. 4. non-living factors
  4. 5. young eels
  5. 6. a mitigation method for preventing eels from migrating
  6. 7. how an organism fits into its environment
  7. 9. bivalve found in uk rivers
  8. 10. aggressive, non-native mammalian predator
  9. 12. living factors
  10. 13. scientific study of the interactions between organisms and the environment