Chapter 7 Vocab

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Across
  1. 2. Level – position an organism occupies in a food chain.
  2. 4. – contamination of air, water, or soil.
  3. 6. – an organism that eats other organisms.
  4. 8. – organisms fighting for limited resources.
  5. 9. – place where an organism lives.
  6. 11. Web – many interconnected food chains.
  7. 14. Pollution – contamination of land or soil.
  8. 17. when all the living specimens of an organism die.
  9. 19. – one benefits and the other is harmed.
  10. 22. – one benefits, the other is unaffected.
  11. 23. Pollution – harmful substances in the air.
  12. 24. factor – factors like disease or competition that affect crowded populations.
  13. 26. relationship – close relationship between two species.
  14. 28. – both organisms benefit.
  15. 29. Capacity – maximum number of organisms an environment can support.
  16. 30. – consumer that eats animals.
  17. 32. – consumer that eats plants and animals.
Down
  1. 1. – one organism hunts another.
  2. 3. – consumer that eats plants.
  3. 5. factor – events like natural disasters that affect populations regardless of size.
  4. 7. – living and nonliving things interacting in an area.
  5. 10. is the thin zone around the outside of the earth that contains all living things.
  6. 12. – group of organisms of the same species living in an area.
  7. 13. Factor – resource that restricts population growth.
  8. 15. Cycle – movement of energy through ecosystems.
  9. 16. are specific regions of the earth that have unique climates demands for living things.
  10. 18. – an organism that makes its own food using sunlight (plants, algae).
  11. 20. Pollution – contamination of rivers, lakes, or oceans.
  12. 21. factors – living parts of an ecosystem.
  13. 23. factors – nonliving parts of an ecosystem.
  14. 24. – an organism that breaks down dead organisms (fungi, bacteria).
  15. 25. Pyramid – diagram showing decreasing energy levels in an ecosystem.
  16. 27. – role an organism plays in its environment.
  17. 31. Chain – pathway showing how energy moves from one organism to another.