if you are referring the fire triangle it is oxygen, heat, fuel. in order to have fire you need all three of these things.
heat or oxygen
Understanding the scientific process of combustion, enables firefighters to put out flames. The fire triangle or Fuel, Heat and Oxygen, requires only one element to be removed to extinguish a fire.
There is no standard collective noun for firefighters, in which case a noun that suits the situation can be used; for example a crew of firefighters, a squadron of firefighters, a team of firefighters, etc.
The possessive form for the plural noun firefighters is firefighters'.
In many cases suburban firefighters will make larger salaries then big city firefighters for several reason.
Dalmatians work with firefighters.
About 800,000, which is above 70% of the total of all firefighters in the United States.About 800,000, which is above 70% of the totel of all firefighters in the United States.
The plural of fireman is firemen. If you want to use inclusive language, then you can say firefighter and firefighters.
In the US there is no month that honors firefighters I am aware of.
The duration of L.A. Firefighters is 2640.0 seconds.
Paramedic firefighter known as fire medics are firefighters with an emergency medical technician-paramedic license.
Firefighters refer to spaghetti the same as you do, Spaghetti is Spaghetti.