Many wild animals are at risk of extinction because of the great changes in their living environment. For example, with the development of cities, the use of pesticides and pollution is serious, and their living areas are becoming narrower and narrower. Many wild animals are now facing a food crisis. At the same time, humans are killing people just to get their fur, skin, horns, teeth and meat.

　　In order to protect the ecological resources, one should realize that the loss of any species is at least the source of the loss of knowledge, the source of natural beauty. To stand out, the following measures should be taken: to develop pollution standards to reduce toxic substances; The killing of certain rare species is prohibited, and national parks should be set up as wildlife reserves.

　　Only we humans can take some powerful measures to preserve wildlife.

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