Nitrogen
The most abundant compound in clean and dry air is nitrogen gas, which makes up about 78% of the atmosphere. Oxygen is the second most abundant compound in the atmosphere, comprising about 21%.
The two Earth regions where oxygen is the second most abundant element by volume are the Earth's crust, after silicon, and the Earth's atmosphere, after nitrogen.
The most abundant element in the troposphere is nitrogen, making up about 78% of the atmospheric composition. Oxygen is the second most abundant element in the troposphere, making up about 21% of the atmosphere.
Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air we breathe. Oxygen is the second most abundant gas, at around 21%. Hydrogen is present in very small amounts, and water vapor is a variable component of the atmosphere.
Oxygen is the second most abundant gas in Earth's atmosphere, making up about 21% of the air we breathe.
oxygen
Oxygen, which is about 21% while nitrogen is the most abundant at 78%.
Nitrogen is the first abundant gas in our atmosphere.
Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air we breathe. Oxygen is the second most abundant gas, at around 21%.
No, nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the atmosphere. Phosphorus is not found as a gas in the atmosphere; it is primarily found in solid or dissolved forms in minerals, rocks, soils, and living organisms.
This gas is oxygen: 20,946 %.
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.
Nitrogen
oxygen --- I started to leave this because it is the wrong answer.
The most abundant gas in Earth's atmosphere is nitrogen, making up about 78% of the air. The second most abundant gas is oxygen, which makes up approximately 21% of the atmosphere.
The most abundant gas in our atmosphere is nitrogen, which makes up about 78% of the air we breathe. Oxygen is the second most abundant gas, making up about 21% of the atmosphere.