level Z ┊ 2067 words ┊ ◄)) 
Informational (nonfiction) 1150L
The idea of people keeping wild animals in captivity has been around for centuries. However, the reason for doing so has shifted over time. Read this fascinating account of how zoos began in ancient times, how they have changed over time, and how modern zoos are working diligently to save endangered species.
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