Pigment
I know this because Ik
Answer:
I would say C
Explanation:
unless the model has mathematical equations in the core, I don't think its A or B. and obviously it isn't interactive unless you want to melt your hand off so i would say C
A disturbance would be things like lava, flows, newly formed sand dunes, or rocks left from a retreating glacier. These are disturbances because Primary Successions happen in lifeless areas, which soil is incapable of sustaining life.
