[Answer] Earth’s atmosphere is made up of several gasses, but which element makes up the majority of the air?

Step 1 : Introduction to the question "Earth’s atmosphere is made up of several gasses, but which element makes up the majority of the air?"

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[Answer] What is the most abundant gas in the Earth's atmosphere?

Step 1 : Introduction to the question "What is the most abundant gas in the Earth's atmosphere?"

...There's oxygen in Earth's air, which is a good thing for human life. But oxygen makes up only 21 percent of the atmosphere. The most abundant gas found in Earth's atmosphere is nitrogen. It makes up 78 percent of the atmosphere. It's a permanent gas, meaning the percentage found in the atmosphere doesn't change on a daily basis. There are trace gasses making up the remainder of the atmosphere, gases such as ozone, helium, nitrous oxide, methane, neo and carbon dioxide. The concentrations of these gasses are always changing. Source: Reference.com