Question

give reason we should plant trees along the edges of river

Answer 1

Because it can absorb water if over floods or rain and prevent soil pollution

Answer 2

They shade and cool the air and the stream water.  It’s what they’re know for.Trees actu­ally can clean the soil and the water per­co­lat­ing through it by absorb­ing chem­i­cals and other pol­lu­tants. Sci­en­tists have stud­ied how trees fil­ter sewage and farm chem­i­cals, reduce the harm­ful effects of con­cen­trated ani­mal wastes, and clean water runoff that enters streams.Trees slow storm water runoff and reduce the threat of flooding.Trees break the force of wind to help keep top­soil in place. Their roots bind the soil con­tribut­ing to bank stabilization.Trees cre­ate oxy­gen. A mature tree pro­duces as much oxy­gen in a grow­ing sea­son as 10 peo­ple inhale in a year.  They also act as a giant fil­ters clean­ing the air we breath. Trees clean the air by inter­cept­ing air­borne par­ti­cles, reduc­ing heat and absorb­ing pol­lu­tants such as car­bon monox­ide, sul­fur diox­ide and nitro­gen dioxide.When they grow old and die, logs that have fallen into a stream will make great habi­tat for fish.