biology

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Across
  1. 2. consumer consumer that eats other consumers
  2. 5. total mass of organisms in an area
  3. 9. change from liquid to gas
  4. 12. pyramid, a diagram showing energy transferred in the ecosystem
  5. 15. conversion of ammonia to nitrates
  6. 16. process of producing energy in cells
  7. 18. consumer consumer that
  8. 19. organisms that feed on detritus
  9. 20. species, first organisms to colonize an area
Down
  1. 1. change from gas to liquid
  2. 3. organisms that produce their own food
  3. 4. levels levels in a food chain
  4. 6. consumer that eats only meats
  5. 7. nonliving components of an ecosystem
  6. 8. conversion of nitrates back to nitrogen gas
  7. 10. consumer that eats both plants and animals
  8. 11. organism that uses chemicals for energy
  9. 13. organisms that rely on others for energy
  10. 14. the ability to do work or cause change
  11. 17. living components of an ecosystem