Biology / biodiversity

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Across
  1. 1. one species harming another
  2. 4. population of different species
  3. 5. organisms eating other organisms
  4. 6. make their own food
  5. 8. all organisms of the same species
  6. 11. both species benefit
  7. 13. one benefits but doesn't harm the other
  8. 16. # of babies born in a given time period
  9. 17. # of individuals died in the same period
  10. 18. species no longer living
  11. 19. species at risk of being extinct
Down
  1. 2. species share food or energy
  2. 3. demand of resources
  3. 7. anywhere life exists
  4. 9. one's role
  5. 10. place where one lives
  6. 12. factor restricts the size of a poplation
  7. 14. seasonal movement of organisms
  8. 15. species at risk but not endangered