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16. The normal air pressure at*sea level is-​

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ong>Answer:

An atmosphere (atm) is a UNIT of measurement EQUAL to the average air pressure at sea level at a temperature of 15 DEGREES Celsius (59 degrees Fahrenheit). One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure DROPS as altitude increases



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