Fire Fire is a combination of three things which are oxygen, heat, and fuel. Or it can defined as is a chemical reaction known as combustion, which occurs when a material combines with oxygen in the presence of heat, producing light, heat, and various reaction products, typically including carbon dioxide and water. For fire to occur, three elements are necessary, often referred to as the "fire triangle": Fuel Any combustible material that can undergo combustion, such as wood, paper, gasoline, or natural gas. Oxygen Typically from the air, which supports the chemical reactions of combustion. Heat Sufficient energy to raise the fuel to its ignition temperature . NOTE : When these three elements are present in the right conditions, a sustained fire can occur. The visible flame is the result of the heated gases emitting light as they react . Fire has been crucial for human civilization, providing warmth, a means to cook food, and a way to produce energy. However, uncontrolled f...