The trees

A tree, it is, practically, high, big and strong. They have a great glass of leaves and his color changes according to the color of the leaves. His bark is hard, broad and of dark brown or clear color. His leaves can be big or small with different forms (Triangular, starry, elliptical ...) and with different colors. They can be Perennes, that they remain all his life in the tree, or you expire, that fall and give place to new others. His branches normally are lengthened and thick. His roots absorb water, mineral substances... They are long and can be thick and thin. His trunk is broad and rigid. The trunk, it holds the tree to the soil and keeps it raised. Some trees have flowers. The human beings, we use to the trees for the wood, for the carpentries and for other human activities. They can grow in many parts and some of them can manage to be millenia.