Hey there!
Zoos should not exist, because they are bad for the welfare of the animals, and even humans. Animals are taken away from their habitat, their families, and thrown into an cage that is much smaller than their natural home. Not only is it dangerous for animals, but humans as well. If an animal escapes, it can attack a human. Animals can also transmit diseases to humans. Animals also may not be given the proper care needed to survive.
For the rest of your essay, you can make a paragraph of why the habitat is unnatural, a paragraph of why it's dangerous to humans and maybe some actual times animals have escaped and attack, and a paragraph of why they may not be given proper care.
Hope this helps! Have a great day, and good luck on your essay!
