how old is earth? when did the origin of life take place?
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新语丝读书论坛
送交者: yell 于 2008-05-05, 10:01:53:
Earth is about 4.6 billions yearrs old?
Life started about 3.8 billions years ago
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Cambrian explosion ”生物大爆炸理论 －nonaccurate translation"“
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yell
(170 bytes)
2008-05-05, 10:50:27
(223782)
然后在0.44 BYA, jawed vertebrate出现了。0.40 BYA, 有了陆地植物
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yell
(130 bytes)
2008-05-05, 11:01:18
(223793)
原始的cellular life从inorganic materils净化迩来”只“用了
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yell
(32 bytes)
2008-05-05, 10:06:45
(223766)
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