An atmosphere is considered oxygen-enriched when it contains more than 21% oxygen by volume. Levels higher than this can present safety hazards due to the increased risk of fire and may require monitoring or ventilation.
My atmosphere is the same as your atmosphere since we all live on the same planet. Oxygen makes up about 19.5% of the atmosphere.
Oxygen makes up about 20.95% of the Earth's atmosphere by weight.
Oxygen makes up about 21% of the Earth's atmosphere.
Oxygen makes up about 21% of the Earth's atmosphere.
Nitrogen makes up roughly 80% of Earth's atmosphere (Oxygen makes up most of the remainder).
Oxygen makes up about 21% of Earth's atmosphere.
My atmosphere is the same as your atmosphere since we all live on the same planet. Oxygen makes up about 19.5% of the atmosphere.
Oxygen makes up about 20.95% of the Earth's atmosphere by weight.
The percentage of oxygen in the atmosphere is approximately 21%. Nitrogen makes up 78% and the last 2% percent is a mixture of various different gases, mostly argon.
Oxygen makes up about 21% of the Earth's atmosphere.
The highest percentage in the Earth's atmosphere is nitrogen, at 78%. Then oxygen(21%) and CO2, 0.9%.
Oxygen makes up about 21% of the Earth's atmosphere.
At sea level everywhere on the Earth oxygen makes up about 20% of the atmosphere.
Oxygen typically makes up about 21% of Earth's atmosphere by volume.
the percentage of oxygen in the atmosphere today is about 20.95%. Or... if you round it you get the most common answer of 21%.
Earth has the largest percentage of oxygen in its atmosphere compared to other planets in our solar system. Oxygen makes up about 21% of Earth's atmosphere, which is essential for supporting life as we know it.
Nitrogen makes up roughly 80% of Earth's atmosphere (Oxygen makes up most of the remainder).