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Altitude: 50-1000 km; Main characteristics: a sublayer that overlaps the Mesosphere and Thermosphere, ionized by solar and cosmic radiation, affects radio wave propagation.

Altitude: 12-50 km; Main characteristics: contains the ozone layer, temperature increases with altitude, jet aircraft fly at the lower levels of this layer.

Altitude: 50-80 km; Main characteristics: where most meteors burn up upon atmospheric entry, temperature decreases with altitude, coldest atmospheric layer.

Altitude: 0-12 km; Main characteristics: weather phenomena, temperature decreases with altitude, contains most of Earth's atmospheric mass.

Altitude: 700 km to 10,000 km; Main characteristics: outermost layer, where atoms and molecules escape into space, transitional zone to outer space.