If the history of the earth represented one year how many days would human evolution occupy?
1 Answer
Sep 2, 2016
Hominids diverged from apes in the last
Anatomically modern humans in the last
Explanation:
- The age of the Earth is about
4.544.54 billion years.
So if we represent the history of the Earth by one year, then
(4.54 xx 10^9) / 365.25 ~~ 12.54.54×109365.25≈12.5 million years.
- Hominids separated from apes about
7.57.5 million years ago.
So the time of the evolutionary divergence of hominids would be represented by:
7.5 / 12.5 = 0.67.512.5=0.6 days~~ 14.5≈14.5 hours
- Anatomically modern humans date from about
200000200000 years ago.
That would be represented by:
(2 xx 10^5) / (12.5 xx 10^6) = 0.0162×10512.5×106=0.016 days~~ 23≈23 minutes.
So anatomically modern humans have been around for the last