Ecological Organization

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Across
  1. 3. variety of living groups, same neighborhood
  2. 7. all life forms and surroundings
  3. 9. same neighborhood, same species
  4. 10. prefix that means life
  5. 12. moisture of third planet from sun
  6. 13. envelop the planet
Down
  1. 1. never took a breath, part of environment
  2. 2. surroundings that are alive
  3. 4. group of living things that breed
  4. 5. all life and where it is, as we now know
  5. 6. prefix meaning water
  6. 7. study interactions among living, nonliving and environment
  7. 8. portions of the planet that are not liquid or gas
  8. 11. prefix meaning earth