Karayh1aleile9angton Karayh1aleile9angton
  • 08-03-2017
  • Biology
contestada

In which supereon did single-celled organisms first form on Earth?
a. Cambrian
b. Paleozoic
c. Phanerozoic
d. Precambrian

Respuesta :

blairt1
blairt1 blairt1
  • 08-03-2017
The answer is D. Precambrian.
Answer Link
AceSolo
AceSolo AceSolo
  • 08-03-2017
Precambrian Should be the answer
Answer Link

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