Okay, I just got this eerie picture [somebody please rub away my goosebumps emoticon] :
As the fungus exhausts trace elements in its substrate, it renders the substrate unsuitable to its growth. The fungus dies in the depleted substrate, but continues to grow outward in an ever-widening ring.
transformed itself in my head to :
As the board exhausts trace elements in its substrate, it renders the substrate unsuitable to its growth. The board dies in the depleted substrate, but continues to grow outward in an ever-widening ring.
