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).
Porokeratosis is a disorder of keratinization or a skin disorder. The disease is widely known as a hereditary dermatitis; it runs down a family related line. Its main characteristic is the spreading of lesions on the body.The disease can affect any part of the body, and it mostly affects the adults.inear Porokeratosis. It is also a rare disease as it is also listed as a rare disease but affects both male and female. The skin disorder is characterized by papules and plaques on the body which form a linear pattern.