Oxygen is vital in combustion procedures including the burning of fuels. All combustion reactions also are samples of redox reactions. A combustion reaction occurs when a substance reacts with oxygen to generate warmth. Just one case in point may be the combustion of octane, the basic principle component of gasoline: https://charliemucjs.nizarblog.com/37065384/the-basic-principles-of-hyperbaric-chamber-cost-uk