Final answer:
The depletion of oxygen in the air during combustion is known as deflagration. Combustion is a rapid chemical reaction that combines molecules of oxygen with molecules of fuel, resulting in the release of energy in the form of light and heat.
Step-by-step explanation:
The depletion of oxygen in the air during combustion is known as deflagration. Combustion is a rapid chemical reaction that combines molecules of oxygen with molecules of fuel, resulting in the release of energy in the form of light and heat. Oxygen is the only gas that supports combustion, and its concentration affects the rate of the reaction.