Oxygen and nitrogen.
Nitrogen and Oxygen.
Nitrogen and oxygen are two of the primary gases that make up air. The third is argon.
Oxygen and nitrogen are the two most abundant gases in the atmosphere. They make up 99% of the air.
The air we breathe contains 78% Nitrogen and 20% Oxygen. The remainder is Helium and other gases
Mostly Nitrogen, and then Oxygen.
1. Nitrogen - cca. 78 % 2. Oxygen - cca. 21 % 3. Argon - cca. 1 %
particles and gases
Air is made mostly of oxygen (O2) and carbon dioxide (CO2).
The two gases that are most common in interstellar clouds,consist mostly of gas,especially hydrogen and helium.
Air contains several gases, but the two most abundant ones are nitrogen (about 78%) and oxygen (about 21%). Other gases found in smaller amounts include argon, carbon dioxide, and trace amounts of others.
The two most common gases in dry air are nitrogen (N2) at approximately 78% and oxygen (O2) at around 21% of Earth's atmosphere composition.
The two types of air balloons are * One is lifted using heated gases. * Another one is lifted using unheated gases.