Introduction:The typical definition of eutrophication is 'decrease in the levels of oxygen in the water bodies due to effects of excessive use of chemical fertilisers.' This statement clearly tells us all about the cause of the problem of eutrophication.
Oak is a common wood, yet many people arenât aware that there are two distinct species â red oak and white oak. Between the two, there are only subtle differences when it comes to durability, hardness, and cost. Color and grain pattern are the distinguishing features that set red oak and white oak apart.
Red OaK (Northern Red Oak) Quercus rubra. The bark darkens and roughens near the base of older trees, while becoming fissured with broad, grayish ridges on the upper trunk. The tree grows on rich, well-drained soils. It occurs commonly throughout most of Ohio, except in poorly-drained or swampy areas.