Assumptions that the earliest life forms had to make their own food have been replaced with the belief that the earliest microorganisms were definitely primary heterotrophs.How could these earliest cells have lived if they did not make their own food,and why do we feel certain that they were not photosynthetic?

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The Answer of Assumptions that the earliest life forms had to make their own food have been replaced with the belief that the earliest microorganisms were definitely primary heterotrophs.How could these earliest cells have lived if they did not make their own food,and why do we feel certain that they were not photosynthetic?

Assumptions That the Earliest Life Forms Had to Make Their