Unit 2: Ecology

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Across
  1. 4. lichens and mosses are typical examples of this species
  2. 6. another word for water cycle
  3. 9. synonym for producer
  4. 10. shows how energy is distributed in trophic levels
  5. 12. Savannah is a type of this
  6. 13. living factors
  7. 17. competition among members of multiple species
  8. 19. one organism benefits and the other is unaffected
  9. 20. islands that went through succession after volcanic eruptions
Down
  1. 1. predator that swallows its prey whole
  2. 2. succession in a previously uninhabited area
  3. 3. this must be left intact for secondary succession to occur
  4. 5. converts nitrogen gas to ammonia
  5. 7. eat detritus
  6. 8. number of trophic levels in the chain flower-rabbit-hawk
  7. 11. oikos in Greek
  8. 14. these consumers return vital nutrients back to the environment
  9. 15. the opposite of biotic
  10. 16. live on our eyelashes and have a commensalism relationship with us
  11. 18. limestone is a source of this essential element