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There are many theories to the origin of life. The one most followed is the modern theory of origin of life intitiated by the Indian scientist of british origin J.B.S Haldane in 1929. He suggested that life must have originated from organic and inorganic compounds from primitive unicellular organisms to complex multicellular ones which leads us to the conclusion that the earliest organisms were indeed probably unicellular. There are other theories which are followed by some, mainly:

a. Theory of special creation

b. Theory of spontaneous generation

c. Cosmozoic theory

d. Abiogenic or chemical origin of life;

No, they were undoubtedly Uni-cellular, if not mycoplasmic, viral, prionic, or those other one or two 'factors' that are sub-cellular in size but still exhibit cellular influence.

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12y ago
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16y ago

Blue-green algae

Blue-green algae

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Q: What were the earliest known living organisms?
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