Ecology Part 1

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Across
  1. 3. an inborn impulse or motivation to action
  2. 5. animal that naturally preys on others
  3. 7. causes a noticeable change in output or another measure of a type of system
  4. 8. pond, coral reef,savannah,jungle
  5. 10. an organism that creates its own food
  6. 12. natural interconnection of food chains
  7. 15. a nonnative species that is hindering a ecosystem
  8. 16. an organism that consumes other organisms for energy
  9. 17. an animal that is hunted
  10. 18. energy found within the trophic levels
  11. 19. a species which other animals largely depend upon
  12. 20. becoming used to something
Down
  1. 1. organisms each dependent on the next as a source of food
  2. 2. organisms that break down dead or decaying organisms
  3. 4. the maximum population of a species that an ecosystem can support
  4. 6. variation of life forms present in different ecosystems
  5. 9. position of an organism in the food chain
  6. 11. a place or location where an organism lives
  7. 13. range of different inherited traits
  8. 14. the mass of living organisms