Verified Answer :

Beside the primary gases , the trace and variable gases make up 1 % of the atmosphere.

The main part of atmosphere consist of 78 % of Nitrogen and 21 % of Oxygen , while other gases such as neon ,Helium , and Argon only covered up the rest 1 %

The answer is 1%

( ignore this, brainly wont let me post unless its more than 20 characters )

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