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The carbon dioxide and oxygen are the two main gases in plasma. When blood travels to the lungs the concentration of these two gases changes.
blood cells and oxygen
The main gases in Earth's atmosphere are nitrogen, followed by oxygen.
Hydrogen and helium are the two main gases in the Universe.
Hydrogen and Helium
star
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.
one of them is oxygen
im not quiet sure but i think it is oxygen and carbon dioxide