Question

What is atmosphere??
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Answer 1

Answer:

An atmosphere is a layer of gas or layers of gases that envelope a planet, and is held in place by the gravity of the planetary body. A planet retains an atmosphere when the gravitational force is high and the temperature of the atmosphere is low.

Answer 2

Answer:

the envelope of gases surrounding the earth or another planet.

"part of the sun's energy is absorbed by the earth's atmosphere"