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4 Written questions

4 Multiple choice questions

  1. If...Then statement that is testable.
  2. Survives by stealing energy off another animal
  3. First life was unicellular, did not need oxygen, were consumers, and lived in oceans. Formed by chemical units.
  4. Occurs after a disturbance in an already existing ecosystem. First species to appear are weeds/grasses.

3 True/False questions

  1. Water CycleDriven by the sun. Changes from liquid to gas to liquid again.


  2. Nitrogen FixationFree nitrogen can not be used so it has to become fixed. Bacteria perfoms this function.


  3. Food WebA food web has multiple (many) paths in which energy flows in an ecosystem. The arrow points in the direction energy goes!


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