Answer :
Final answer:
The atmospheric pressure at sea level is 14.7 psi.
Explanation:
The atmospheric pressure exerted by the Earth's atmosphere at sea level is 14.7 psi.
Scientists define this pressure as 1 bar, which means that each square centimeter of Earth's surface experiences a weight equivalent to 1.03 kilograms pressing down on it. This pressure is necessary for human survival, as our bodies have evolved to function optimally at this level of atmospheric pressure.
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