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.
Characteristics: Blackjack oak is a medium-sized, deciduous, native tree that can reach a height of sixty feet. It is one of the most common oaks in Oklahoma and one of the dominant Quercus species in the cross timbers region of Oklahoma and Texas.It is an upland oak, most common on sandy soils.klahomans may take it for granted but the  Blackjack Oak  is a member of the Red Oak family which thrives exclusively along a unique belt of forest called The Cross Timbers region spreading from north-central Texas throughout the eastern half of Oklahoma and into southeastern Kansas.