1 Zoos are educational.
In addition/For
example, they are fun places to visit.
2 In particular/All things considered, zoos
help endangered animals.
3 Zoo breeding programmes have helped save
endangered species. Besides/However, I
do not believe all animals bred in zoos
should be kept there.
4 There were captive animals in zoos and
because/as a result, the Père David's deer
survived.