The atmosphere is held together by Earth's Gravitational force of attraction.
What is gravitational attraction?
Gravitational attraction is the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.
This force of attraction holds every object in the universe, including the atmosphere.
Thus, the atmosphere is held together by Earth's Gravitational force of attraction.
Learn more about Gravitational force here: https://brainly.com/question/72250
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