Coal forms from the accumulation of plant debris, usually in a swamp environment. When plant debris dies and falls into the swamp the standing water of the swamp protects it from decay. Swamp waters are usually deficient in oxygen, which would react with the plant debris and cause it to decay.
Porokeratosis is generally considered to be a benign condition though malignant transformation has been seen in all but the punctate variety, necessitating regular followup of patients with porokeratosis (Maubec et al., 2005; Sasson & Krain, 1996).
When you prick a blackhead or a pimple with fingers, they leave a liquid which in turn causes infection thus giving rise to pores. In simple terms, when people donât follow proper, safe and natural ways to reduce & get rid of acne, pimples and blackheads, its then they suffer from open pores.