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.
Any working part of the mouth can get affected by oral cancer including your gums, teeth, lips, roof of mouth, floor of the mouth located under the tongue, tissue lining your cheeks, lips and throat. Read on if you want to find out what does mouth cancer look like.ook Further in Detail. The following are some mouth cancer pictures that can help you in knowing what does mouth cancer look like. 1. Leukoplakia (White and Hardened Patches). Squamous Cells is the name given to the flat cells that are present on the surface of the tongue, mouth and lips.