This question requires listening to the essay. Based on the text provided:
* Points mentioned from Exercise 2: The essay touches on the debate about whether animals should be in zoos or their natural habitats.
* Other points for zoos:
* Zoos play an important role in nature conservation.
* Zoos can be very educational.
* Other points against zoos:
* Zoos cannot recreate an animal's natural habitat.
* Animals can be unhappy in cages.
* It would be more useful to spend money on protecting habitats rather than zoos.
* Documentaries are a good source of education.