ecology

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Across
  1. 4. Organism that feeds off another
  2. 6. Animal that is eaten by a predator
  3. 8. physical factor in the environmentis water and air
  4. 11. Factor that affects population numbers.
  5. 12. Number of organisms of a species in an area
  6. 13. where an organism lives.
  7. 15. A natural unit of living and non-living parts that interact to produce a stable system
  8. 16. Living and non-living surroundings
  9. 17. Relationship where two different organisms use the same resource such as food
Down
  1. 1. organism where a parasites live
  2. 2. important physical factor is amount of drinking
  3. 3. animal that hunts prey
  4. 5. organisms of different species for a long period
  5. 6. organisms in a given area
  6. 7. important living or biotic factor.[
  7. 9. Relationship where animals help each other
  8. 10. Study of living organisms
  9. 14. Non-living or abiotic