Life took approximately 500 million (5x108) years to appear after the formation of the earth. Thus life is thought to be evolved almost 4 billion (4x109) years back from now, as the earth was formed 4.5 billion (4.5x109) years ago.
NEET UG 2020 — Zoology Evolution
After about how many years of formation of earth, life appeared on this planet?
Held on 30 Apr 2020 · Verified 9 Jul 2026.
500 billion years
50 million years
500 million years
50 billion years
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