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4 Written questions

4 Multiple choice questions

  1. Eats animals that are already dead.
  2. Occurs where no previous ecosystem existed. First species to appear are lichens and mosses.
  3. Occurs after a disturbance in an already existing ecosystem. First species to appear are weeds/grasses.
  4. Free nitrogen can not be used so it has to become fixed. Bacteria perfoms this function.

3 True/False questions

  1. PreyAnimal that eats prey

          

  2. Origin of LifeDriven by the sun. Changes from liquid to gas to liquid again.

          

  3. Water CycleSurvives by stealing energy off another animal

          

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