Unit 8 Ecology Review

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Across
  1. 3. bacteria turn soil nitrates back into nitrogen gas
  2. 6. all populations living in area; all living things
  3. 8. Nitrogen-fixing bacteria or lightning change nitrogen gas into useful use
  4. 11. water falls from clouds in the sky
  5. 12. all living and nonliving factors in an area
  6. 14. is a single living thing
  7. 15. all parts of Earth where life exits in water, land, and air
  8. 16. water in plants evaporates into the atmosphere
  9. 17. water vapor, air turns into liquid water
  10. 18. burning coal and oil adds CO2 into the air
  11. 20. Many interconnecting chains that show several feeding options in the ecosystem
Down
  1. 1. Nonliving factors
  2. 2. use dead or decaying organisms as their source of energy
  3. 4. 10% of energy of each level passed on the next level
  4. 5. all members of same species living in an area
  5. 7. a large area that shares similar climate, plants, and animals
  6. 9. 1 feeding option
  7. 10. eat other organisms to gain energy
  8. 13. liquid water becomes water vapor
  9. 19. all living or once living factors