The main gases in Earth's atmosphere are nitrogen, followed by oxygen.
They "burn" it in oxygen to produce CO2.
Oxygen, carbon dioxide (no air is perfectly pure oxygen),and trace gases. So the atmosphere is made up of many many gases
These gases are sulfur dioxide and nitrogen dioxide.
These gases are sulfur dioxide and nitrogen dioxide.
science
Hydrogen and helium are the two main gases in the Universe.
Hydrogen and Helium
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There are not two gases in the layer but one. Ozone is the only gas present in the ozone layer.
canada
Helium and Hydrogen
Two main gases exchange in the lungs: oxygen and carbon dioxide.
carbon dioxide and nitrogen
usually Argon or Nitrogen
Hydrogen and helium
amonia, hydrogen,
helium and hydroen