Transportation within a habitiat

Haha, Yes it is inert, but the funny part is that its used to evacuate
OXYGEN air, etc that is oxidizing what ever product is sealed up.

For a fire to be a fire, it must have three things, heat, fuel, oxygen.
remove any of the three and the fire doesn't exist, instantly. If nitrogen
was much lighter than air it would not work to evacuate air in a bottle or
pouch...as it happens at equal temps nitrogen has specific gravity of .967
compaired to "1.0" of air and around 1.16 for oxygen ...but cooling it a bit
would help it drop down.

no biggy, but since CO2 levels is not something you want to mess with
(usually less than 1%) and nitrogen (N2) is around 78% that it would seem
Nitrogen would be a less critical gas to have circulating.... (oxygen is
around 21% and other trace gases make up the rest) or am I screwy here? :-)