nitrogen and oxygen
The two most common gases in Earth's atmosphere are nitrogen, which makes up about 78%, and oxygen, which makes up about 21%.
Nitrogen (79%) and oxygen (20%).
Nitrogen and Oxagen
Nitrogen and Oxygen are the most common gases in the atmosphere.
The two gases that are most common in interstellar clouds,consist mostly of gas,especially hydrogen and helium.
The two most common gases in Earth's atmosphere are nitrogen (approximately 78%) and oxygen (approximately 21%).
Nitrogen and Oxygen make up nearly 99% of the dry atmosphere.
Nitrogen & Oxygen.
The two most common gases in Earth's atmosphere are nitrogen (N) and oxygen (O2). Nitrogen is roughly 78% and oxygen is roughly 21%.
These gases are nitrogen, oxygen, argon, carbon dioxide.
The two most common compounds in the Earth's atmosphere are nitrogen gas (N2) and oxygen gas (O2), which together make up about 99% of the total volume of gases.
The most common gases are the nitrogen and oxygen. A dry air is composed of about 21% of oxygen and 78% nitrogen. There is also Argon and carbon dioxide which are present in smaller amounts.