The fundamental setting for fire is the living world
Life created oxygen, life created fuel
The fundamental chemistry of fire is a biochemistry
And as soon as plants began colonizing Earth
They burned
And they've been burning ever since
Fire
The fundamental setting for fire is the living world
Some places, some eras
Had lots of fire routinely, others only episodically or even rarely
And one reason is that life did not control
The third element of the fire triangle
Namely ignition
Fire