Oxygen forms 21 percent of the Earth's atmosphere.
The gas that makes up 21% of Earth's atmosphere is oxygen. It is an essential component for most living organisms to breathe and is crucial for various biological and chemical processes on Earth.
Oxygen makes up 21 percent of Earth's atmosphere.
Oxygen makes up about 21% of Earth's lower atmosphere by volume.
Oxygen
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The gas that makes up 93% of Earth's atmosphere is nitrogen. Oxygen is the second most abundant gas, making up around 21%.
Oxygen forms 21 percent of the Earth's atmosphere.
The gas that makes up 21% of Earth's atmosphere is oxygen. It is an essential component for most living organisms to breathe and is crucial for various biological and chemical processes on Earth.
Oxygen makes up 21 percent of Earth's atmosphere.
Oxygen makes up about 21% of Earth's lower atmosphere by volume.
Oxygen
1 percent of the earths atmosphere is made of the following: - Argon (0.93%) - Carbon dioxide (0.03%) - Neon> trace - Helium> trace - Methane> trace - Krypton> trace - Xenon> trace - Hydrogen> trace - Ozone> trace 21% of earths atmosphere is made of oxygen 78% of earths atmosphere is made of nitrogen
The most prominent gases are nitrogen (78 percent), oxygen (21 percent) and argon (nine-tenths of a percent).
Nitrogen, making up about 78% of Earth's atmosphere. Oxygen follows as the second most abundant gas, making up approximately 21%.
The primary gas found in Earth's atmosphere is nitrogen, making up about 78% of the air we breathe. Oxygen is the second most abundant gas, making up about 21% of the atmosphere.
The gas that makes up about 78% of Earth's atmosphere is nitrogen. Oxygen is the next most abundant gas, making up about 21% of the atmosphere.