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.
Oak tree species that change leaf color and drop off in fall are known as deciduous. These species typically occur in temperate zones where cool-to-cold winter occurs. Examples of deciduous oak trees are the shingle oak, Northern pin oak, English oak and Italian oak.