Final answer:
Fire requires fuel, oxygen, and heat.
Step-by-step explanation:
Fire requires three components to occur: fuel, oxygen, and heat. Fuel refers to any combustible material, such as wood, paper, or gasoline, that can sustain a fire. Oxygen is necessary to support the chemical processes that occur during fire, and a minimum oxygen content of 16 percent is required for most fires to burn. Heat is responsible for igniting a fire and maintaining it, allowing it to spread.