A fungus that makes blue cheese.
Explanation:
Rusts and smuts belong to Basidiomycetes.
I think it is stage 2
At stage two, the skin breaks open, wears away, or forms an ulcer, which is usually tender and painful. The sore expands into deeper layers of the skin. It may appear as a scrape, blister, or a shallow crater in the skin. At times this stage looks like a blister filled with clear liquid. Also at this stage some skin may be damaged beyond repair or may die.
One reason is if someone is injured and needed to use pain pills, sometimes they get addicted to it
B ecosystem. They include abiotic factors and biotic factors.