Earth's Dynamic Atmosphere

What is the mainstream unit of measuring air pressure?
A. Inches of mercury
B. PSI
C. Pounds per square foot
D. Centimeters of mercury

my answer is a.

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  1. Depends how old your text is. I use Pascals. PSI is most common in retail engineering. (in your tire for example)

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  2. By the way a Pascal is a Newton per square meter.

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