Well there's many reason but here are few
-ability to pass knowledge generation to generation using spoken and written language
-ability to save and destroy entire species of animals over short amounts of time.
-ability to shape the transform the land around us.
-ability to explore other planets
-ability to create technology that makes life a lot easier for us
- thumbs(can manipulate stuff easily)
-math and science
Dolphins just aren't on our level
English
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You can't breath without me bow down peasants!
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Wrong haha. We can create artificial oxygen
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Really? Source?
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Google. Use it
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Well I gotta go I see a snail coming...