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Atmospheric pressure is measured with a/an _______ and is commonly expressed in _______ .

A. anemometer, kilometers per hour
B. barometer, millibars
C. thermometer, degrees Celsius
D. hygrometer, a percentage

User Timberlake
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Atmospheric pressure is measured with a barometer. It is commonly expressed in millibars. Atmospheric pressure is the force per unit area exerted on a surface by the weight of air above that surface in the atmosphere of Earth.
User ToooooLong
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