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4 Written Questions

4 Multiple Choice Questions

  1. Occurs after a disturbance in an already existing ecosystem. First species to appear are weeds/grasses.
  2. A food web has multiple (many) paths in which energy flows in an ecosystem. The arrow points in the direction energy goes!
  3. Driven by the sun. Changes from liquid to gas to liquid again.
  4. Free nitrogen can not be used so it has to become fixed. Bacteria perfoms this function.

3 True/False Questions

  1. ScavengerEats animals that are already dead.


  2. Primary SuccessionOccurs where no previous ecosystem existed. First species to appear are lichens and mosses.


  3. Hypothesis statementSurvives by stealing energy off another animal


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