Across
- 4. the branch of biology that deals with relations
- 6. relating to or resulting from living things
- 9. a group of people in same place
- 12. the envelop of gases surrounding the earth or another planet
- 13. the practice of living as a parasite in it another organism
- 14. a person that makes groups or supply’s goods
- 15. and organism that derived the organic compounds and energy it needs
- 17. likely to cause economic or environmental harm
- 19. a system of interlocking food chains
Down
- 1. symbiosis that is beneficial to both organisms involved
- 2. a biological community of interacting organisms
- 3. happens when a climax community it inter mediate community is impacted by disturbance
- 5. all the in habitants of a particular town area or country
- 7. selection organisms better adapted to there invironment
- 8. an association between two organisms in which one benifits and the other derives neither be if it or harm
- 10. key a key for the identification of organisms based on a series of choices
- 11. the regions of the surface atmosphere and hydrosphere
- 16. when a new patch of land is created for the first time
- 18. physical rather than biolical not derived from living organisms