用英语表达建立动物园对动物有什么好处

Firstly,setting up a zoo will benefit the animals in danger.Appropriate care from the zoo assistants will greatly reproduce those animals and prevent them from extinction.
Secondly,a zoo will provide animals with best living condition,not only in terms of food but also in climate and environment.
Thirdly,animals may grow better in zoos because of their special needs,which will be carefully controlled by zoo assistants.