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.
American Hornbeam: Nicknamed beech because of the leaf similarity, this tree is actually in the birch family. Its name horn (tough) and beam (strong) describes the tree's hard wood. Silver Maple: Easily recognized in the summer by the silvery underside color, the leaves turn yellowish-orange in the fall. White Oak: A widespreading tree-both in its branches and range throughout the US. Sassafras: Look for this tree in all color ranges! Also, look for at least two different leaf shapes.