Question

what is Atmosphere
give reasons​

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 gravity is great and the temperature of the atmosphere is low.

Explanation:

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Answer 2

Answer:

It's a good thing these gases are there. Our atmosphere protects the Earth from the harsh rays of the sun and reduces temperature extremes, acting like a duvet wrapped around the planet. ... There are several different types of greenhouse gases; the major ones are carbon dioxide, water vapor, methane and nitrous oxide.

Explanation:

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