A) 3.5 billion years
B) 3.0 billion years
C) 2.5 billion years
D) 3.2 billion years
Correct Answer: A
Solution :
Abiogenesis or spontaneous creation or Autobiogenesis was proposed by von Helmont (1577-1644) and state that life originated abiogenetically from non living materials by spontaneous generation about 3.5 billion years ago.
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