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6 Written questions

6 Multiple choice questions

  1. prokaryotic cells and then cyanobacteria
  2. mass extinction of most of a species
  3. estimating the age of a sample or event in years , usually by measuring the amount of unstable atoms in the sample
  4. a cell that does not have a nucleus or any other membrane-covered organelles; also called a bacterium
  5. a species of humans with modern features that may have migrated out of Africa 100,000 years ago and eventually into every continent
  6. a cell that contains a central nucleus and a complicated internal structure

5 True/False questions

  1. Australopithecineestimating the age of a sample or event in years , usually by measuring the amount of unstable atoms in the sample

          

  2. List the defining characteristics for each era.Precambrian: cyanobacteria, eukaryotes, prokaryotes, oxygen in the atmosphere, ozone
    Paleozoic: creepers, plants, aerobic animals
    Mesozoic: Age of the Reptiles, dinosaurs
    Cenozoic: humans and their ancestors

          

  3. Relative Datingdetermining whether an event or object, such as a fossil, is older or younger than other events or objects

          

  4. Mesozoic Erathe period in the geologic time scale beginning about 248 million years ago and lasting about 183 million years ago- called Age of the Reptiles. Dinosaurs, marine lizards, birds, cone-bearing trees, and starting flower bearing plants.

          

  5. Hominidsthe first primate ancestor; also, a group of living primates that includes lorises and lemurs, 55 million years ago

          

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