Question

define the atmosphere
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Answer 1

Definition of atmosphere. 1a : the gaseous envelope of a celestial body (such as a planet) b : the whole mass of air surrounding the earth. 2 : the air of a locality the stuffy atmosphere of the waiting room. 3 : a surrounding influence or environment an atmosphere of hostility.

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Answer 2

Answer:

An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low.