Oxygen is vital in combustion procedures such as the burning of fuels. All combustion reactions can also be examples of redox reactions. A combustion response occurs any time a substance reacts with oxygen to build heat. One particular example may be the combustion of octane, the principle ingredient of gasoline: https://beckettzqakt.alltdesign.com/cost-of-oxygenators-no-further-a-mystery-55707032