Populations Change Over Time

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Across
  1. 2. – a visual way to show data over time (type of graph)
  2. 7. – to grow larger in number
  3. 10. – a scientist who studies ecosystems
  4. 11. – an organism that hunts and eats another organism
  5. 16. – something that controls how big a population can get
  6. 17. – all the different populations living together in an area
  7. 18. – an organism that is hunted and eaten
Down
  1. 1. – an organism that eats other organisms
  2. 3. – an organism that makes its own food
  3. 4. – a living factor in an ecosystem
  4. 5. – a general pattern or direction of change
  5. 6. – a model showing how energy moves from one organism to another
  6. 8. – all the living and nonliving things in an area
  7. 9. – an organism that breaks down dead organisms
  8. 11. – a group of the same type of organism living in one area
  9. 12. – when populations stay stable over time
  10. 13. – a nonliving factor in an ecosystem
  11. 14. – to become smaller in number
  12. 15. – to go up and down over time