A good friend shares his things with his friends. We get food, fruits, flowers, seeds, medicines from trees. A true friend always protect his friends. Trees protect us from sizzling heat of the sun under its shade. Trees supply us with wood to manufacture furniture. Trees harbor many birds and creatures. Trees give shelter to many animals which again in turn serve human beings. By means of photo-synthesis trees maintain the supply of oxygen. Trees absorb carbon-dioxide and give up oxygen for us to survive. Trees control flood, prevent land erosion, rotten leaves make the land fertile.