Oxygen is more important than we think, without oxygen we will receive more heat from sun resulting in extreme skin burns.
Without oxygen all combustion engines will stop, which means within few seconds hundreds of aircrafts will fall killing thousands, and millions of cars will stop killing and injuring billions.
Without oxygen there will be no oxidation and metals will melt together hence all Vehicles and machineries will be destroyed. Since Oxygen is an important binder without it concrete building and structures will turn into DUST!
Oceans will turn into Hydrogen and will evaporate, Air pressure will decrease and human ear drums will explode!
