生物多樣性 英文

1、shipsofdesert-expositionexposition Exposition is explanatory writing. Its purpose is to explain or clarify a point Patterns of exposition: exemplification ;process analysis ;cause effect analysis; comparison and contrast; classification ;analogy; definition. Organization Part 1 (para. 1-8): the list

2、 of the images of environmental destruction: the drying up of the Aral; deforestation; air pollution Part 2 (para. 9-16): analysis of the global threats posed by the environmental destruction and the common cause-the change in the relationship between human civilization and the earths natural balanc

3、e Part 3 (para. 17-26): the solution to environmental destructions- reinventing and healing the relationship between civilization and the earthLoss of biodiversity Biodiversity（生物多樣性）Definition：Biological diversity (biodiversity) refers to a range of diverse living organisms (animals, plants, micro-

4、organisms) on a regular basis constituted by the combination of stable ecological complexes.Value of biodiversity and its significance ：Direct value：（1） biodiversity provides food, fiber, building materials and furniture, and other industrial raw materials for human beings.（2）Biodiversity also have

5、aesthetic value（美學(xué)價(jià)值）, we can cultivate our sentiments and beautify peoples lives. In addition, biodiversity can also stimulate inspiration for literary and artistic creation. winter sweet chrysanthemum bamboo（3）Biodiversity has an important ecological function. No matter what kind of ecosystem, wil

6、dlife is one of the essential components. Wildlife once reduced, the ecosystem stability would be destroyed, the survival environment of mankind would also be affected. the potential value: as far as the medicinal properties, 80% of the populations in developing countries rely on plants or animals, to ensure the basic health.Causes of biodiversity reduction:1、The rapid increase in population.The population keeps increasing, so arable land must be expanded to meet demands of eating, this becomes the direct threat to the natural eco-systems.2、Overexploitation En