Yes I know the answer maybe if you actually ask the question
Answer:
Putting down The website or book where you found that info
Explanation:
If you found your info on Wikipedia for example you would put the site URL in the Citing resources page.
Zoos and wildlife sanctuaries keep animals safe and preserve endangered species. Plus, they model their captive habitats to match their natural ones. They don't have to hunt or worry about dying!
(I don't agree with this LOL, free the animals!)