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5 Written questions

5 Multiple choice questions

  1. longest subdivision of geologic time scale that is based on the abundance of certain types of fossils and is subdivided into eras, periods, and epochs
  2. Middle era of Earth's history, during which Pangaea broke apart, dinosaurs appeared, and reptiles and gymnosperms were the dominant land life-forms
  3. organism with a three-lobed exoskeleton that was abundant in Paleozoic oceans and is considered to be an index fossil
  4. Third longest divison of geologic time-subdivided into epochs and is characterized by the types of life that existed worldwide
  5. The longest part of earths history, lasting from 4 billion to about 544 million years ago.

5 True/False questions

  1. 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

          

  2. PangaeSecond longest division of geologic time based on major worldwide changes in types of fossils

          

  3. Organic evolutionChange of organisms over geologic time

          

  4. CyanobacteriaChlorophyll-containing, photosynthetic bacteria thought to be one of Earth's earliest life-forms

          

  5. Geologic time scalesThis division of Earth's history into time units based on life forms that lived only during certain periods.