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  3. Unit 5. biological diversity
  4. Prokaryotes: bacteria and archaea
  5. Prokaryotic diversity

22.1 Prokaryotic diversity  (Page 8/31)

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8 / 31  The first organisms that oxygenated the atmosphere were
A  cyanobacteria
B  phototrophic organisms
C  anaerobic organisms
D  all of the above
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Practice MCQ 4 FlashCards 2 Key Terms 20

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Source:  OpenStax, Biology. OpenStax CNX. Feb 29, 2016 Download for free at http://cnx.org/content/col11448/1.10
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