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    4. how long has "man" homo sapiens walked this earth?
    how long has "man" homo sapiens walked this earth?

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    0  Views: 1372 Answers: 2 Posted: 12 years ago
    Tags: humans
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      How long man has been on earth is a very controversial question. Scientists say that man has walked the earth for approximately 90,000,000 years or roughly 90 million years. Look here for more information: http://www.historyworld.net/wrldhis/PlainTextHistories.asp?historyid=ab12#

      11 years ago. Rating: 1
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        About 200,000 years

        12 years ago. Rating: 0
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