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Which gas forms 21 percent of the Earth's atmosphere?
Oxygen forms 21 percent of the Earth's atmosphere.
What gas is 21 percent of the Earth's atmosphere?
Oxygen is the gas that makes up about 21 percent of the Earth's atmosphere.
What two elements comprise 99 percent of the volume of the Earth's atmosphere?
Earth's atmosphere is roughly 78% Nitrogen & 21% Oxygen.
What is 21 percent of Earth's atmosphere composed of?
Oxygen is the primary component, making up about 21% of Earth's atmosphere.
How many percent air is on the Earth?
Approximately 21% of Earth's atmosphere is composed of oxygen.
Which gas forms 21 percent of the Earth's atmosphere?
Oxygen forms 21 percent of the Earth's atmosphere.
What gas is 21 percent of the Earth's atmosphere?
Oxygen is the gas that makes up about 21 percent of the Earth's atmosphere.
What is the mass percent of oxygen?
The mass percent of oxygen is approximately 21% in Earth's atmosphere.
What is its atmosphere is about 20 percent oxygen?
The Earth
Which planet has 20 percent oxygen?
Earth
What composes twenty percent of earth's atmosphere?
Oxygen composes of twenty-one percent of Earth's Atmosphere.
What percent of oxygen does the earths grass produce?
The Earth's grass produce 20 to 30 percent oxygen. The other 70 to 80 percent of oxygen is produced by marine plants.
Where is 97 percent of water is found on earth?
oxygen
What planet has about 20 percent oxygen in its atmosphere?
Earth
What planet has the atmosphere of about 20 percent oxygen?
Earth.
What two elements comprise 99 percent of the volume of the Earth's atmosphere?
Earth's atmosphere is roughly 78% Nitrogen & 21% Oxygen.
What is 21 percent of Earth's atmosphere composed of?
Oxygen is the primary component, making up about 21% of Earth's atmosphere.
