Age, diameter, height, radial growth, geographical location, site and growing conditions, silvicultural treatment, and seed source, all to some degree influence wood density. <answer>Variation</answer> is to be expected. Within an individual tree, the variation in wood density is often as great as or even greater than that between different trees (Timell 1986). <answer>Variation</answer> of specific gravity within the bole of a tree can occur in either the horizontal or vertical direction. :)
What should be anticipated because of the many factors that influence wood's density?
Variation