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The Earth's atmosphere is homogeneous up to about 100 km from the surface: https://en.m.wikipedia.org/wiki/Homosphere https://en.m.wikipedia.org/wiki/Homospher
by philipkglass 5y ago
The Earth's atmosphere is homogeneous up to about 100 km from the surface:
https://en.m.wikipedia.org/wiki/Homosphere https://en.m.wikipedia.org/wiki/Homosphere
That includes the ozone layer.
Gases don't stratify in the lower atmosphere. Pure argon is heavier than oxygen and nitrogen, but it does not sink down from the atmosphere to form a concentrated surface layer. Neither do CFCs.