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Ancient history

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The span of recorded history is roughly 5,000-5,500 years, with cuneiform possibly the oldest form of writing.

However, genetic evidence places the evolution of human beings at 100,000 to 1,000,000 years ago.

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Chemical formula

... molecule of that compound. The number of atoms (if greater than one) is indicated as a subscript[?]. For example methane, a simple molecule consisting of one ...