­　　2017英语专业八级作文范文：保护濒危物种必要性

­　　Many natural resources are disappointed of being wasted on our planet every day. One of themost important resources we are abusing is our trees. Each year , hundreds of thousands ofacres of trees disappear in countries all around the world . In some countries , these trees areused for fuel. In other countries , trees are destroyed to build housing developments andshopping centers. Saving trees has become a major cultural and economical issue in many ofthe world.

­　　Trees are essential to our survival . They are a major part of the process of photosynthesis .Photosynthesis is the process in which green plants use carbon dioxide to produce oxygen ,andoxygen is something all of us need . The fewer trees there are ,the more this affects our abilityto breathe.

­　　Trees are also important in the development of many medicines. The mainstream medicalestablishment did not recognize this for many years. However , those who use naturalmedicines have always known how important trees are. Now scientists are agreeing with them.Many drugs come from the leaves of certain trees, along with other herds and plants.

­　　In rural areas, farmers have always known how important trees are to soil conservation. Thisis why you’ll usually see trees lining a field . Tree rots help keep the soil in place, and are also afactor in water distribution deep beneath the ground .

­　　Finally ,we should save trees from disappearing because they provide so much pleasure. ‘I thinkthat I shall never see a poem as lovely as a tree,’ wrote a poet . That is the truth . A tall ,stately tree is beautiful to look at, and pleasing to the soul . It is also a great place to findshade on a hot summer’s day. For practical and emotional reasons, we need to preserve ourplanet’s trees.