Animals in Zoos

The oldest known zoological , where people began to (1) ………………… animals, was revealed during excavations in Egypt dating back (2) ………………… 3,000 years. Originally, animals (3) ………………… taught to collectionsperform for visitors, but this no longer (4) …………………, and now the purpose of zoos is to enable people to see animals behaving naturally. There are some very important zoos in big cities like Berlin and Vienna, but not (5) ………………… approves of them. However, it is argued that they (6) ………………… us with the opportunity to (7) ………………… about the natural world and to be close to wild animals. Neither of (8) ………………… things would be possible (9) ………………… zoos. Some people are against zoos because they (10) ………………… it is wrong to put animals in cages. They argue that in zoos which are not (11) ………………… properly, animals live in filth and are given unsuitable food to eat.