Axolotls :3

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Across
  1. 6. A district of Mexico City
  2. 8. Regrowing parts of the body.
  3. 10. Something that helps filter and clean contaminated water
  4. 12. An unhatched offspring
  5. 13. Dying out to the point where there are no more
  6. 15. Creatures that begin in water, then slowly move out to land
  7. 19. Good for something/someone
  8. 21. Woven rafts anchored in shallow water used to grow food.
Down
  1. 1. A part of Mexico; The main city
  2. 2. Having juvenile features even in old age
  3. 3. A frilly salamander
  4. 4. A community of organisms interacting with eachother
  5. 5. Animals that often invade a place they don’t belong in, often throwing off the balance of the ecosystem
  6. 7. A change to something, usually an abnormal change
  7. 9. Food chains of what eats what in an ecosystem
  8. 11. Changing over time to adapt
  9. 14. Living in the best possible conditions
  10. 16. A creature studied intensely to help scientists understand biological processes in humans
  11. 17. Start; origin or beginning of something.
  12. 18. Body parts that help animals get oxygen
  13. 20. The immature form of an animal