Biology puzzle

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Across
  1. 2. liquid to vapor
  2. 4. a large community of flora and fauna
  3. 6. not a living thing
  4. 7. interacting group of organism in a common space
  5. 9. organism that can create its own food.
  6. 10. number of organisms in one species
  7. 11. community of interacting organisms
  8. 13. living thing
  9. 16. a group of similar individuals
  10. 17. the branch of biology that deals with living organisms and their surroundings
  11. 18. the ability to do work
Down
  1. 1. scientific term of rain
  2. 3. organism that decomposes organic material
  3. 5. an organism that lives in an organism
  4. 8. dense forest rich in biodiversity
  5. 12. a global ecosystem made up of living things
  6. 14. series of organisms using the next as food
  7. 15. organism that consumes other organisms
  8. 19. role a organism has in its environment