Respuesta :

21% oxygen and 78% nitrogen
Hello, My Dear Friend!

The gases in Earth's atmosphere include Nitrogen – 78 percent. Oxygen – 21 percent. Argon – 0.93 percent.

In Other Words, it is close to 99% percent because it is made up of 78% nitrogen and 21% oxygen.

Hope my answer has come to your Help. Thank you for posting your question here in [tex]Brainly.[/tex] We hope to answer more of your questions and inquiries soon. Have a nice day ahead! :)

[tex](Ps. Mark As Brainliest IF Helped!)[/tex]

[tex]-UniteTheSeven, UniteTheLeague, Justice League!!! :D[/tex]

[tex]-TheOneAboveAll :)[/tex]