Ecology/Biology

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Across
  1. 5. what is a response to stimulus?
  2. 7. months going towards light is an example of what type of behavior
  3. 8. unrestricted populations of organisms experience
  4. 9. when an organism moves into a population
  5. 10. what is the highest level of organization in ecology
  6. 12. differential movement of a plant in response to touch stimulus
Down
  1. 1. obtaining energy from sunlight for nutrition
  2. 2. A biotic or abiotic resource in the environment that causes population size to decrease is a
  3. 3. what occurs in essentially lifeless areas
  4. 4. differential growth of a plant in reponse to gravity pulling on it
  5. 6. branch of biology that deals with the relation of organisms one to another and their surroundings
  6. 11. when an organism moves out of a population