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The first life on Earth, a simple, single-celled prokaryotic bacteria, appeared on life approximately how long ago? A) 4 thousand years B) 4 million years C) 4 billion years D) 4 trillion years
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The first life on Earth, a simple, single-celled prokaryotic bacteria, appeared on life approximately how long ago? A) 4 thousand years B) 4 million years C) 4 billion years D) 4 trillion years

User Tredontho
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The answer is C. GoodcLuck!!

User Get
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c. approximately 4 billion years ago (3.8 to be exact)
User StackOverthrow
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