The gas that makes up 21% of Earth's atmosphere is oxygen.
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 is the gas that makes up about 21 percent of the Earth's atmosphere.
Oxygen makes up 21 percent of Earth's atmosphere.
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.
Oxygen makes up about 21% of Earth's lower atmosphere by volume.
The gas that makes up 93% of Earth's atmosphere is nitrogen. Oxygen is the second most abundant gas, making up around 21%.
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 is the gas that makes up about 21 percent of the Earth's atmosphere.
Nitrogen makes up about 77% of earths gasses oxegen is 21% of earths gases corbon dioxide is 1% arogon is 1% as well
Oxygen makes up 21% of the Earths atmosphere.
Oxygen makes up 21 percent of Earth's atmosphere.
Nitrogen makes up 78% of the Earth's atmosphere. Oxygen makes up about 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.
Earths atmosphere is 78% nitrogen,21%oxygen,0.9% argon,and 0.03% carbon dioxide with very small percentages of other elements
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