Chapter 2 Stuff

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Across
  1. 3. The study of interactions between an organism and it's environment
  2. 4. The total weight of living matter
  3. 6. Symbiotic relationship when one benefits at the other's expense
  4. 8. Interacting populations in an area
  5. 11. Produce their own food
  6. 12. One species, compete with one another for food
  7. 14. route of transfer of energy from autotrophs to heterotrophs
  8. 16. All possible feeding relationships
  9. 17. Break down and absorb nutrients from dead or decaying things
  10. 18. A collection of niches in which an organism lives
Down
  1. 1. A symbiotic relationship were only one is helped
  2. 2. represents a feeding step
  3. 5. permanent close association between two or more organisms of a different species
  4. 7. Unable to make their own food
  5. 8. living organisms in an environment
  6. 9. Non-living parts of the environment
  7. 10. A symbiotic relationship where both benefit
  8. 13. role of a particular species in a community regarding food, space & reproduction
  9. 15. Life-supporting portions of Earth