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NEET2020ZoologyEvolutionActual

After about how many years of formation of earth, life appeared on this planet?

Options

  1. A500 billion years
  2. B50 million years
  3. C500 million years
  4. D50 billion years

Correct answer

C. 500 million years

Step-by-step solution

Life took approximately 500 million ( 5   x   10 8 ) years to appear after the formation of the earth. Thus life is thought to be evolved almost 4 billion ( 4 x 10 9 ) years back from now, as the earth was formed 4 . 5 billion ( 4 . 5 x 10 9 ) years ago.

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