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Mostly nitrogen and carbon dioxide, with lots of sulfa gasses as trace (plus water vapor).
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∙ 12y ago
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What are the two most abundant compounds in the atmosphere?
On Earth, about 78% nitrogen and 21% oxygen.
Oxygen makes up about what percentage of earth's air today?
20.9 % (almost 21%)Half a billion years ago the percentage was higher (in the mid-30s) due to abundant plant life. Before photosynthesis evolved, atmospheric oxygen was close to zero & poisonous to the earliest cells.it is 21% oxygen,that is ok because it isn't good to breathe pure oxygen
What are the elements are most abundant in peptidoglycan?
Carbon, Hydrogen, Oxygen and Nitrogen.
The most abundant metal in Earth's crust?
The most abundant metal in the Earth's crust is iron. The most abundant element in the Earth's core is oxygen.
What are the four most common elements in living matter?
Carbon, Hydrogen, Nitrogen, Oxygen
Which gas in the atmosphere is the second most abundant gas?
the most second abundant gas is oxygen
Which layer of the atmosphere is oxygen more abundant?
This layer of the atmosphere is troposphere.
What is the second most abundant gas in the Earth's atmosphere?
Oxygen
What is more abundant in the atmosphere oxygen or Nitrogen?
Nitrogen
What are the most abundant nonmetal gases in the atmosphere?
oxygen
What is the most abundant of nitrogen and oxygen?
Nitrogen is more abundant; our atmosphere is 78% Nitrogen.
What is the least common element in the atmosphere of the earth?
Nitrogen is the least abundant element in the atmosphere of the Earth. The most abundant element in the atmosphere of the Earth is oxygen.
The most abundant gases are nitrogen and?
The most abundant gases are nitrogen and oxygen in the Earth atmosphere.
What is the second most abundant gas found in the atmosphere?
Oxygen
What are two of the most abundant gases in the atmosphere?
oxygen and nitrogen
What are the two gases are the most abundant in the atmosphere?
Nitrogen and Oxygen
What are the two most abundant the gases in the atmosphere?
Nitrogen and Oxygen
