Sapiens A Brief History of Humankind pdf

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Sapiens A Brief History of Humankind pdf free download. ABOUT 13.5 BILLION YEARS AGO, MATTER, energy, time, and space came into being in what is known as the Big Bang. The story of these fundamental features of our universe is called physics. About 300,000 years after their appearance, matter and energy started to coalesce into complex structures, called atoms, which then combined into molecules. The story of atoms, molecules, and their interactions is called chemistry.

Sapiens A Brief History of Humankind pdf free download

Sapiens A Brief History of Humankind pdf

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