coxt20
coxt20 coxt20
  • 03-03-2017
  • Biology
contestada

The earliest organisms were completely heterotrophic in nature. Why?

Respuesta :

maxday
maxday maxday
  • 03-03-2017
The correct answer to this question is this one: they lacked oxygen. The earliest organisms were completely heterotrophic in nature because of the reason that they lacked oxygen. A heterotroph is an organism that cannot fix carbon and uses organic carbon for growth. 
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