The upper part of the thermosphere is called the Ionosphere
A+ Magnetosphere
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thermosphere is the region of the upper atmosphere.
thermosphere
thermosphere
The thermo pause
thermosphere
The upper portion of a fraction is called the numerator.
Thermosphere
because temperatures increase steadily with altitude.
The upper portion of your heart contains the atria, both right and left.
Extending thru both thermosphere & exosphere is ionosphere, named for its concentrated layers of electrically charged particles.
England controlled the upper portion and the United States controlled the lower portion. The Upper Portion of Oregon eventually became part of Canada.