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6)When was the first life forms appeared on earth? |
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Answer» The age of the Earth is about 4.54 billion years; the earliest undisputed evidence of life on Earth dates from at least3.5 billion years ago.The continents have since repeatedly collided and been torn apart, so maps of Earth in the distant past are quite different to today's. The history of life on Earth began about3.8 billion years ago, initially with single-celled prokaryotic cells, such as bacteria. |
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