Following the rapid increase of the world population, more arable lands were required to feed those extra mouths and land to build on for them to live in. On top of that, more resource and energy were also needed to keep the world's industries going. Therefore a lot of natural habitat of wild life had been destroyed for the above reasons. If urgent measures are not being taken, then these wild life will extinct like those dinosaurs and dodo's. Many western civilised countries had set various of wild life protection societies. Even China are doing something to keep the pandas from disappearing from the Earth's surface. India and Bangladesh are paying a lot of attention to their tigers too. But if people want to keep their other companies on Earth then there are still a lot of works have to be done.

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　　 many wild animals are facing the danger of extinction, because the environment that they are living in has changed greatly. for example, with the developmet of cities, the using of insecticide and serious pollution, their living areas have become narrowcr and narrower. many of the wild animals, now are confronted with food crisis. at the same time, man is killing off species just for getting their fur, skin, horns, teeth and meat.
       in order to protect our resources of ecology, people should realize that the loss of any species is at least the loss of source of knowledge and a source of natural beauty. there fore, measures of the following should be taken: pollution standards are made to keepdown poisons; killing off certain rare species is prohibited; national parks should be set up as wild life, reserves.
        only if we human beings take some drastic measures can wild animals