What is atmospheric pressure in simple words?

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Tags

1. #barometer
2. #exerted
3. #atmosphere
4. #earth
5. #called
6. #mercury
7. #atmospheric
8. #inches
9. #force
10. #commonly
11. #millibars
12. #pulls
13. #millimeters
14. #above
15. #pressure
16. #measured
17. #surface
18. #gravity