Some of the variation in weight that is not. accounted for in Tables 1 or 2 is due to the variation. in the wood density of the different species. AdjustÂ­. ment factors have been developed to account for the. variation by species. The adjustment factors were. each species by the average density of all of the trees.
For example, regular smoking increases the risk of developing lung cancer; therefore smoking is a risk factor for lung cancer. The risk factors for mouth cancer include: 1  Smoking - studies indicate that a 40-per-day smoker has a risk five times great than a lifetime non-smoker of developing oral cancer.  Chewing tobacco.
Causes of Oral Thrush. Oral thrush is caused primarily when there is an overgrowth of Candida albicans, a yeast normally present in the mouth in small quantities and kept in balance by helpful bacteria in the body.ess frequently, oral thrush may also be caused by an overgrowth/infection of the Candida glabrata or Candida tropicalis yeasts, which also are present in the mouth.