Ecology- Ecosystems and Cycles

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Across
  1. 2. another word for autotroph; organisms that can make their own food
  2. 5. an organism's role in its environment; whether it is a producer or consumer, what it eats, etc.
  3. 6. this process is the way plants take carbon from the air
  4. 11. organisms that can make their own food
  5. 13. a single step wise flow of energy in an ecosystem
  6. 14. when the number of prey decreases, this happens to the number of predators
  7. 15. localized atmospheric warming that can occur due to excess carbon dioxide in the air
  8. 19. where plants are in a food chain
  9. 20. an animal that hunts other animals
  10. 22. bacteria and fungi; put carbon dioxide back into the air when they break down dead organic matter
  11. 23. a nonliving thing that affects the stability of an ecosystem
  12. 26. organisms that have to find a different way to get food; cannot make it themselves
  13. 30. burning fossil fuels does this to the amount of carbon in the air
  14. 31. live on a plants roots and make nitrogen available to them
Down
  1. 1. cycle that involves gas in the air that is directly taken in by plants and converted into an organic compound that is used for energy by plants and animals
  2. 3. absorbed by plants from the ground, needed for nucleic acids
  3. 4. all of the living and nonliving things that interact in one place
  4. 7. cutting down trees would do this to the amount of carbon dioxide in the air
  5. 8. a living thing that affects the stability of an ecosystem
  6. 9. a group of one type of organism
  7. 10. absorbed by plants from the ground, needed for proteins and nucleic acids
  8. 12. several interacting populations
  9. 16. all of the feeding relationships in an ecosystem
  10. 17. this happens to energy as you move up the food chain
  11. 18. one single living thing
  12. 21. this process is how plants, animals, and decomposers put carbon into the air
  13. 24. things that put carbon into the air
  14. 25. the way that nitrogen gets into the soil from the air
  15. 27. something that takes in and holds carbon
  16. 28. burning these put carbon into the air and leads to excess heat
  17. 29. another word for heterotroph; organisms that have to eat