Zoos play an important role in the world for conservation and education. They are (particular) important for endangered species. Many animals are critically danger and may go extinct in the wild, but in zoos, they are going wrong. Many others are already extinct in the wild and only animals are kept in zoos survive. Even those critics of zoos often recognize that it is better to have species preserved somewhere than lose them altogether, as animals held in zoos (protect) from serious threat.