My 1,000
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My 1,000
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   ago      all      brains      chews      crucial      early      evolution      habits      less      nothing      selection      shape      shifts      simplest      skills      smaller      teeth      that      theory      time  
Eating and food processing from two million years helped us to develop language. Researchers say cutting up meat was a step in our . We needed time for chewing, which gave us more time to develop language and communicate. Cutting up food saved humans as many as 2.5 million per year. In contrast, chimpanzees spend half their day chewing. This means they have less to communicate.

Researchers also say the of our face changed. Our jaws and teeth became . A professor said: "We went from having…big …to having smaller teeth." He said this, "allowed for the for speech and other in the head, like bigger ." The professor chewed raw meat to test his . He said: "You chew and you chew and you chew, and happens." He said that slicing meat, "is the technology of ".

 
 

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