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5 Written Questions

5 Multiple Choice Questions

  1. This division of Earth's history into time units based on life forms that lived only during certain periods.
  2. Next smaller division of geologic time after the period, is characterized by differences in life forms that may vary regionally.
  3. Change of organisms over geologic time
  4. an era of recent life that began about 65 million years ago and continues today,includes the first appearance of Homo Sapiens about 400,000 years ago.
  5. Middle era of Earth's history, during which Pangaea broke apart, dinosaurs appeared, and reptiles and gymnosperms were the dominant land life-forms

5 True/False Questions

  1. PeriodThird longest divison of geologic time-subdivided into epochs and is characterized by the types of life that existed worldwide

          

  2. Eonslongest subdivision of geologic time scale that is based on the abundance of certain types of fossils and is subdivided into eras, periods, and epochs

          

  3. Eraslongest subdivision of geologic time scale that is based on the abundance of certain types of fossils and is subdivided into eras, periods, and epochs

          

  4. Precambian timeorganism with a three-lobed exoskeleton that was abundant in Paleozoic oceans and is considered to be an index fossil

          

  5. Cyanobacteriaan era of recent life that began about 65 million years ago and continues today,includes the first appearance of Homo Sapiens about 400,000 years ago.

          

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