The atmosphere is a mixture. What is the atmosphere made up of?

Discover how much nitrogen, oxygen, water vapour, carbon dioxide, and other elements constitute Earth's air. Earth's atmosphere is a mixture of nitrogen, oxygen, water vapour, carbon dioxide,... Encyclopædia Britannica,Imma say Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.Hope this helps have a awesome night ❤️✨

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Is there any pictures in the question? i can’t answer the question without seeing the model.

B] nitrogen fixationmight be wrong, so correct me.want extra on your answers? just go on my account and go on questions and answer, or ask in the comments!