The abiogenesis occurred about how many billion years ago [Pb. PMT 199 – McqOptions

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1.	The abiogenesis occurred about how many billion years ago [Pb. PMT 1999;CPMT 2000; KCET 2000]
A.	1.2 billion
B.	1.5 billion
C.	2.5 billion
D.	3.5 billion
Answer» E.

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