People say that keep animals at zoos only may cause negative impacts to both animals and natural environment. Basically, I agree that keep animals behind the bar is not environmental friendly enough. However, there are still many people and children start to interest nature environment and pay attention to animals after visit a zoo.
Zoos are the bridges that have connected city and nature environment. Though, if zoos disappeared from city, the people who love nature environment and animals may even go to the rural areas to visit or to do research about nature and animals. On the other hands, the rest of people who were born at city and growth at city are very difficult to have opportunities to touch nature environment and become animal lovers, if there are no zoos at city. Because of this, there are numbers of zoos at city, which are providing chances for people to know what nature environment is and what animals are with less cost than ask people go to countryside.
Besides, as a truism industry, zoos may make profile and use the profile to give an economic support to nature environment and animals. Most of zoos at city are national owned or public organization. At most of countries, public organization or national owned sectors are not allowed to make profile. Therefore, the income of zoos eventually is going to become the economic support to nature environment and animals.
In brief, all the evidences show that zoos are the necessary facility at city.
