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Life originated on earth about _____

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in Biology – Class 12 by (271k points)
Life originated on earth about _____

(a) 8 billion years ago

(b) 5 billion years ago

(c) 4 billion years ago

(d) 3 billion years ago

This question was addressed to me in semester exam.

My enquiry is from Evolution in chapter Evolution of Biology – Class 12

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Correct option is (c) 4 billion years ago

The best I can explain: Life originated on earth about 4 billion years ago. That is life appeared 500 million years after the formation of earth. First non-cellular forms of life originated 3 billion years ago.

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