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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.
What are the four most common elements in living matter?
Carbon, Hydrogen, Nitrogen, Oxygen
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.
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?
The second most abundant gas in the Earth's atmosphere is oxygen, which makes up about 21% of the gases in the atmosphere.
Which gas in the atmosphere is the second most abundant gas?
Oxygen is the second most abundant gas in Earth's atmosphere, making up about 21% of the air we breathe.
What is more abundant in the atmosphere oxygen or Nitrogen?
Nitrogen is more abundant in Earth's atmosphere, making up about 78% of the air. Oxygen makes up about 21% of the atmosphere.
Which layer of the atmosphere is oxygen more abundant?
This layer of the atmosphere is troposphere.
What gas is more abundant nitrogen or oxygen?
In the atmosphere, Nitrogen is about four times as common as is Oxygen.
What is the second most abundant gas in the Earth's atmosphere?
Oxygen
Is hydrogen the most abundant element in the atmosphere?
Nitrogen is the most abundant element in the earth's atmosphere.
The most abundant gas in the atmosphere is oxygen?
Nitrogen (N2) is the most abundant gas in the Earth's atmosphere having percent volume of 78.8 compare to Oxygen 20.95 %, which falls on the second place after Nitrogen.
What are the two most abundant gases in earths atmosphere presently?
The two most abundant gases in Earth's atmosphere are nitrogen (about 78%) and oxygen (about 21%).
The second most abundant element in the Earth's atmosphere is?
oxygen
What are the most abundant nonmetal gases in the atmosphere?
The most abundant nonmetal gases in the atmosphere are nitrogen, oxygen, and argon. Nitrogen makes up about 78% of the atmosphere, followed by oxygen at around 21%, and argon at approximately 0.93%.
