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About 4.6 Billion years ago...
Primitive Earth provided inorganic precursors from which organic molecules could have been synthesized
After millions of years vegetation started growing more frequently, creating whats called the great oxygenation event
Then the single cell organisms became multi-cell organisms, and years of evolution lead to species we know today
The Earth was formed 4.6 billion years ago, but was to hostile for life until 3.9 bya, and the first fossil was not dated for about 3.5 bya
In the 1950's two scientists created an experiment to show how organic life can just develop.
Which leads us to the life we know today. Over millions of years of evolution and the forming of new species and the extinction of others
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