Does evolution explain the origin of life?
Answers
It is generally agreed that all life today evolved by common descent from a single primitive lifeform. It is not known how this early form came about, but scientists think it was a natural process which took place perhaps 3,900 million years ago.
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• The evolutionary history of life on Earth traces the processes by which living and fossil organisms evolved, from the earliest emergence of life to the present.
• The similarities among all known present-day species indicate that they have diverged through the process of evolution from a common ancestor.
• Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule oThe evolutionary history of life on Earth traces the processes by which living and fossil organisms evolved, from the earliest emergence of life to the present.