are zoos ethical pros and cons?
['Pro 1. Zoos educate the public about animals and conservation efforts. ... ', 'Pro 2. Zoos produce helpful scientific research. ... ', 'Pro 3. Zoos save species from extinction and other dangers. ... ', "Con 1. Zoos don't educate the public enough to justify keeping animals captive. ... ", "Con 2. Zoos are detrimental to animals' physical health. ... ", 'Con 3.']