close enough
fire is a chemical reaction between other elements and oxygen. it does not need extreme heat to occur, if the planets oxygen was like increased to 100% of the atmosphere pretty much everything would just burn. it is a exothermic reaction which is why it releases heat.
In the elements arn't iron and hydrogen and oxygen and stuff but the lightning earth water fire and wind but you get the point.
now to begin training
I want you to practice building up chakra by focusing on a leaf which i will put on your head.