In my opinion,I think we should keep animals in the zoo. because:

• There are more chances of endangered species surviving due to no natural threat
• Scientists can study diseases that kill species and invent cures
• In a world, where nature and lands are being destroyed it gives the animals a safe haven
• People can see animals that they will probably never see again in their life time
• It is a great way to educate children that we are not the only inhabitants of the planet

Tớ ko biết viết về chủ đề này nhưng tớ bt tại sao thôi 

Tại vì : The reason why people think that keeping animals in zoos is not good for their welfare: animals are deprived of their natural habitat. The animals may not have enough room. ... animals are forced to be close to other species and humans, which may not be natural for it.