softball1424
softball1424 softball1424
  • 12-10-2016
  • Biology
contestada

plz help
What event began the Paleozoic Era

Question 1 options:

Agriculture


Fish ate all of the blue green algae.


Bacteria released oxygen into the atmosphere.

Respuesta :

vedantik28
vedantik28 vedantik28
  • 12-10-2016
bacteria released oxygen into the atmosphere
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