|
关于环保，参考了有关资料 Many parts of the world are losing important natural resources, such as forests, animals, pr clean water. Choose one resource that is disapearing and explain why it needs to be saved?
Natural resources have been used by humna beings for a long time. This had not become a severe problem until the 18th century, when the Industrial Revolution started. Since then, the process of industrialization and urbanlization began and humna populations started exponential growth. As a result, innumerable basic natural resources are disapearing rapidly. The depletion of the natural resources is increasingly endangering the survival of the human race. Innumerable natural resources are vanishing rapidly. We must take effective measures to protect these invaluable natural resources to maintain humnan lives of next generations on the earth. The vital resources we need to protect is forests.
First, forests, as an essential resources that provides humna beings with enormous economic,environmental and social benefits, are vanishing at an alarming rate. Huge areas of forests are vut down to meet hman needs. Logging companies logged down forests to get timber and paper producats. Farmers cut down trees for wood fuel or clear forests are to make way for farmland. Stastistics show that over the past threedecades, 5 million squre kilometer-or 20 percent of the world's tropical forests-have been cleaned.
Second, forests have used by human beings since the prehistroric times, are vanishing rapidly form the earth. We must take effevtive measures to safeguard forests to achieve the sustainable achievement and preserve the balance of the ecosystem. Forests are a vital resource which offers tremendous benefits to humnan beings. However, as a result of human needs, they are disappearing rapidly. Millions of acreas of forests are cleared to meet human needs. People cut down trees to seek construction materials, energy source, paper products, and make way for farmlands. Take China for the country's steel output, Chinese people cut down forests to use as wood fuel for the innumerable makeshift"backyard furnaces".
It is a scientific fact that forests bring huge benefits to human beings and play an essential role in maintaining the balance of ecosystem. Therefore, it is a hugh priority for us to safeguard forests. Forests provide humna beings with timber and papre products, even disposable chopsticks. Besides tramendous economic benefits, forests provide clean air by consuming huge amounts of carbon dioxide and releasing oxygen. And by decreasing the amount of carben dioxide, which is responbsible for globle warming, forests reduce the effects of globle warming. Forests provide natural habitats for many species, especially tropical rainforests where millions of species thrive. If forests are cut down, many species will lost their natural habitats and probably will disappear as a result. The extiction of a large number of species in a short period of time take its toll on the balance of the current ecosystem.
Due to humna activities, forests, which are an essential natiral resource, are vanishing at an alarming rate. The situation presents human race with a serious problem and has had negative, perhaps disastrous impacts on the interest of human beings and the balance of the ecosystem. Therefore, it is high time for us to take action to preserve forests. | 
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
楼主
发表于 2007-9-13 15:37:00
