Ecology

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Across
  1. 3. The regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms
  2. 5. All the inhabitants of a particular town, area, or country
  3. 6. An animal that is caught and killed by another for food
  4. 11. An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide
  5. 13. A branch of biology that deals with the relations of organisms to one another and their physical surroundings
  6. 15. web A system of interlocking and interdependent food chains
  7. 16. level Each of several hierarchical levals in an ecosystem, compromising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy
  8. 18. factors The living components(organisms) that shape up the environment
  9. 21. An animal that feeds on carrion, dead plant material, or refuse
  10. 23. An individual living thing that carries on the activities of life by means of organs which have separate functions but are dependent on each other
  11. 24. An organism, especially a soil bacterium, fungus, or invertebrate, that decomposers orgain material
Down
  1. 1. An animal or person that eats both plant and animal
  2. 2. An organism deriving its nutritional requirements from complex organic substances
  3. 4. factors A non-living part of an ecosystem that shapes its environment
  4. 5. (Of an organism) living as a parasite
  5. 7. A biological community of interacting organisms and their physical environment
  6. 8. chain A heirarchical series of organisms each dependent on the next as a food source
  7. 9. An animal that naturally preys on others
  8. 10. A group of people living in the same place or having a particular characteristic in common
  9. 12. The natural home or environment of an animal, plant, or other organism
  10. 14. A person, company, or country that makes, grows, or supplies goods or commodities for sale
  11. 17. An animal or plant on or in which a parasite or commensal organism lives
  12. 19. An animal that feeds on flesh
  13. 20. An animal that feeds on plants
  14. 22. A person who purchase goods and services for personal use