Answer :
Here, the fire uses heat to ignite nearby fuel sources, causing combustion. At this point, the fire is spreading throughout the area and consuming all fuels in its path.
Above the fire, a plume or layer of smoke can be seen. Smoke may collect in the upper two feet of a room if it is indoors. The temperature in the room has risen, as you can sense. It will start a fire of its own, apart from the original, if enough heat, fuel, and oxygen accumulate in this region. When this occurs, the flames will instantly fill an entire room in a matter of seconds. A heated layer of gas will start to emit heat downwards once convection has caused it to form.Emissions of electromagnetic waves can transmit heat.
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