ECOLOGY

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Across
  1. 2. a non living thing.
  2. 5. Populations that live together in an area.
  3. 6. Community and non-living surroundings.
  4. 13. The regions of the surface, atmosphere, and hydrosphere of the earth.
  5. 14. Group of organisms of one type that live in same area.
  6. 15. a living thing.
  7. 16. Organisms that rely on other organisms for their energy and food supply.
  8. 17. Evaporating from the leaves of plants.
  9. 18. Amount of living tissues.
Down
  1. 1. The scientific study of interactions between different organisms and their environment or surroundings.
  2. 2. Organisms that produces their own food.
  3. 3. WEB Network of food chains within an ecosystem.
  4. 4. Organisms that break down dead organic matters.
  5. 7. FIXATION Process by bacteria convert nitrogen gas in the air to ammonia. (Ammonia is a form that plants can use.)
  6. 8. Both species benefit.
  7. 9. a relationship between two organisms when one organism benefits but the other one is being harmed.
  8. 10. One species benefits the other is neither helped nor harmed.
  9. 11. Attempting to use the same resource at the same time.
  10. 12. a natural home for an organism.