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The earth is 4.5 billion years old so I don't understand what you mean with "400 out of 500 million years". Also for a lot of that time earth was a hellishly h
by ShellfishMeme 3y ago
The earth is 4.5 billion years old so I don't understand what you mean with "400 out of 500 million years".
Also for a lot of that time earth was a hellishly hot place with little life.
- nerdchum 3y agoThe past 500 million years have been rich with life.