Question

what are the sources of information about the atmosphere​

Answer 1

I think you want to ask "What is atmosphere made up of ?"

Atmosphere is made up of a mixture of gases and water vapours. It also contains dust and some other particles. 


hope its help you

Answer 2

Answer:

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. The atmosphere of Earth is composed of nitrogen (about 78%), oxygen (about 21%), argon (about 0.9%), carbon dioxide (0.04%) and other gases in trace amounts.