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6.Evolution
easy
After about how many years of formation of earth, life appeared on this planet?
A
$50$ billion years
B
$500$ billion years
C
$50$ million years
D
$500$ million years
(NEET-2020)
Solution
The correct answer is option (4) as life appeared 500 million years after the formation of earth. i.e. almost 4 billion years back.
Standard 12
Biology
