Its called "fire".
smoke
Fuel burning is the burning of fuel. In an automobile engine it is called combustion. The gasoline mixed with oxygen and ignited by the spark plugs explodes.
Oxygen
The burning of carbon - be it food in plants and animals or from burning fuel or from burning forests.
Wood is used for fuel through burning it in air (or Oxygen).
Mixes fuel and air at the desired ratio for burning.
combustion
burning fuel
No, Burning alcohol for fuel is not efficient. Not at all. It is horrible for the economy and pollutes the air. So false. E2020 questions... ugh!
Because they let out fume from the burning fuel.
Respiration
Of course, burning any solid fuel generates air pollution.