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| | Wikinfo | Human |
 | | Similarly, other animals often have simple methods of communication, but the degree to which humans create and use complex grammar and abstract concepts in language has not been proven to exist in any other species, despite much effort to find it. |
 | | Note, however, that the extinct species of the Homo genus (eg, Homo neanderthalensis, Homo erectus) were also adept tool users and there is some evidence that they may have had linguistic skills. |
 | | While humans have all these characteristics, from the biological viewpoint "what distinguishes humans from all other animals?" is an odd question: there's no one thing that makes cats, dolphins, or song sparrows unique. |
| www.wikinfo.org /wiki.php?title=Human (1222 words) |
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