Ecology crossword

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Across
  1. 1. Measures how crowded a place is
  2. 6. Natural enviorment of an organisims
  3. 7. Geographical region characterized by specific features
  4. 9. The body's process of maintaining a stable internal system
  5. 10. An area where living organisms interact with non living organisims
  6. 11. Any living or once living thing
  7. 12. A group of organisms that share common characteristics
  8. 13. A group of organisms that can breed with each other
  9. 14. Study of how organisms interact
Down
  1. 1. Total number of individuals
  2. 2. environmental pressures that can affect reproduction of a species
  3. 3. A non living part of an ecosystem
  4. 4. A set of chemical reactions in the body that break down food into energy
  5. 5. An environmental condition that limits re producing
  6. 8. The maximum number of individuals that an ecosystem can support