Trees are our best friends. They play a very important role in our life. We can not live without them. They give us timber, paper and firewood. Timber is used in making houses, train compartments, big boxes, tools etc. Without paper life may be difficult for us. Paper is necessary for study and writing. People in villages use firewood to cook meals. They use wood to build houses, huts, carts and agriculture tools. Trees also give us food, gum and medicine. They also add to the beauty of life. Gardens can not be charming without them. We need them for oxygen and good health. Trees also help to control pollution: They absorb carbon dioxide. They improve our environment. They cause rainfall and protect water resources under the ground. They prevent floods and droughts. Therefore, we should try our best to grow more trees.