The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air. Oxygen (O2) is the second most abundant gas at about 21%. The inert gas argon (Ar) is the third most abundant gas at 0.93%.
these ??? There are no choices to choose from.
The atmosphere of the Earth is primarily nitrogen, which is about 78% of air by volume. Nearly 21% is oxygen, 1% is argon, and the remainder consists of trace gases and carbon dioxide.
it's oxygen !!!!!!!!!!!!!!!!!!!!!!!!!!!!
Oxygen makes up about 21% of the Earth's atmosphere. Nitrogen is the most abundant component, making up approximately 78%.
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.
Nitrogen, you can't survive on it obviously but you breath it in every day it is the most abundant gas in the atmosphere followed by oxygen I think.
Nitrogen
78% of the air that we breathe is nitrogen gas.
The most abundant element in Earth's atmosphere is nitrogen, making up about 78% of the air we breathe. Oxygen is the second most abundant element in the air, at around 21%.
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%.
Nitrogen
Nitrogen is the most abundant gas in the air. It makes up 78% of the air in the atmosphere.