Why do the constituent gasses of air stay mixed, rather than separate by altitud

e?
mother mcree's uptown jug champs  08/12/17
Operation Northwoods
Coriolanus  08/12/17


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mother mcree\'s uptown jug champs


12:20 AM - August 12th, 2017

e?


Coriolanus

(STEM to Win)


12:21 AM - August 12th, 2017

Operation Northwoods