when was human being born on Earth
i)5-6 lakh years ago
ii)1-2 lakh years ago
iii)50-60 lakh years ago
iv)10-12 lakh years ago
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The first human ancestors appeared between five million and seven million years ago, probably when some apelike creatures in Africa began to walk habitually on two legs. They were flaking crude stone tools by 2.5 million years ago. Then some of them spread from Africa into Asia and Europe after two million years ago.
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