Ecosystems

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Across
  1. 3. all of the populations of species in an area
  2. 4. a group of organisms with similar characteristics
  3. 7. a single living thing
  4. 8. a balance of populations of organisms
Down
  1. 1. an organism that is not living or alive
  2. 2. all nonliving and components of an ecosystem
  3. 5. abiotic and biotic factors in an area
  4. 6. a group of interacting species in an area