j7elleBaberlyc
j7elleBaberlyc j7elleBaberlyc
  • 23-09-2016
  • Biology
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The earliest organisms were completely heterotrophic in nature. Why?

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makenziewilliams
makenziewilliams makenziewilliams
  • 23-09-2016
They were completely heterotrophic in nature because it allowed them to absorb different materials from the environment as an energy source.
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Аноним Аноним
  • 27-09-2016
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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