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Vlada [557]
3 years ago
11

Match each eon with the appropriate characteristic or event. 1. Hadean eon 2. Archean eon3. Proterozoic eon4. Phanerozoic eona.

formation of the solar system b. current eonc. toxic atmosphere; first bacteriad. buildup of oxygen; first eukaryote
Geography
1 answer:
Andreyy893 years ago
4 0

Answer:

  • 1. Hadean eon     ---    a. formation of the solar system
  • 2. Archean eon   ---   c. toxic atmosphere; first bacteria
  • 3. Proterozoic eon   ----  d. buildup of oxygen; first eukaryote
  • 4. Phanerozoic eon.   ---   b. current eon

Explanation:

  • The Hadean Eon represents the formation of the planet that is time before the reliable fossilized record of the life and ended about 4.0 billion years ago. The Archean eon is characterized by the toxic atmosphere and the arrival of the first single-celled organism as bacterial life forms.  
  • The current era dates to the geologic formation of the Phanerozoic eon and covers about 542 million years and the Proterozoic era was the formation of the first oxygen molecules and first Eukaryota.
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