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Keeping animals in a zoo，not only can protect them but also let people know more about them。Besides，people can feel being get closed to nature in this way。For animals itself，they needn"t worry about food and survive crisis any more。They can enjoy delicious meals each day in a ragulary time。In addition，the owner of the zoo can make a fortune managing the business。What"s more，living in a zoo can provide animals medical treatment which they can"t get in the wild environment。